Chapter 3 

The imaginary lines we draw on the globe

Have you every thought about how weird it is that we draw these lines on a map and call it a border? In this section we’ll look at the type of boundaries we create for the world, even including the borders and boundaries we have for the oceans.

What you need to learn

The different types of borders and boundaries around the globe.

Boundaries & Borders

demarcated

antecedent

subsequent

consequent

superimposed

geometric

relic

natural

Ocean/Sea Boundaries

L:aw of the Sea

territorial waters

contiguous zone

exclusive economic zone (EEZ)

international waters

Types of Political Boundaries

demarcated boundary

A demarcated boundary is a type of political boundary that is physically marked and defined on the landscape. This type of boundary is established through legal documentation and visible signs on the ground. The physical markers can include fences, walls, signs, painted lines, or other structures that clearly show where one jurisdiction ends and another begins. These markers are often established through agreements or treaties between neighboring states or regions.

Demarcated boundaries are significant in geopolitics because they provide a clear, tangible line that helps prevent disputes over where one country or administrative area ends and another begins. This clarity is especially important in densely populated areas or in regions where resources, like water or minerals, straddle the boundary.

On a map, a demarcated boundary would be represented by a line that corresponds to the physical markers on the landscape. The line might be accompanied by symbols or notes indicating the type of physical demarcation, such as a fence or wall.

antecedent boundary

An antecedent boundary is a type of political boundary that was drawn before significant human settlement or cultural development occurred in a region. This means that the boundary was established before the current patterns of human organization, such as cities, roads, or cultural landscapes, were developed. Unlike other types of boundaries that might be influenced by existing cultural or ethnic divisions, antecedent boundaries often ignore the subsequent settlement and development in the area.

These boundaries can be significant in shaping the political and cultural landscape. Since they were established before the current cultural or demographic patterns, they may not align with them, potentially creating unique political and cultural dynamics. For example, an antecedent boundary might divide a homogeneous cultural or ethnic group or place them in different countries, leading to potential conflicts or issues of national identity.

On a map, an antecedent boundary might be along natural features of the landscape. For instance, if a river was used as a reference for the boundary when it was drawn, the boundary line on the map would follow the course of the river. Other boundaries, like the geometric border between the U.S. and Canada does not following a natural feature. It was the result of a border treaty and formalized long before that area was populated by white settlers migrating west (the area had long been populated by indigenous).

subsequent boundary

A subsequent boundary is a type of political boundary that is established after the development of the cultural landscape in a region. This boundary is drawn to accommodate existing cultural, ethnic, or economic differences between groups. Subsequent boundaries are often the result of long-term processes, such as settlement, war, or negotiation, and they frequently evolve over time.

These boundaries are significant in understanding human geography because they are directly influenced by the social and cultural realities of the area. They often follow natural features that are also cultural divides, like rivers or mountains, but their primary characteristic is that they reflect the distribution of cultural or ethnic groups. Subsequent boundaries can change as the cultural landscape evolves, leading to historical shifts in the political map.

On a map, a subsequent boundary is represented as a line that typically aligns with cultural or ethnic divisions within the landscape. These boundaries may curve or follow irregular patterns, reflecting the complex nature of human settlement and cultural divisions.

Let’s create an image to represent a subsequent boundary on a map, showing a boundary line that aligns with cultural or ethnic divisions.

consequent boundary

A consequent boundary is a type of political boundary that is established with the aim of accommodating existing cultural, ethnic, or linguistic divisions within a region. It is similar to a subsequent boundary but is more specifically aligned with these cultural distinctions. A consequent boundary is drawn to coincide with cultural or ethnic divisions, often with the intention of minimizing conflict and promoting harmonious relations between different groups.

This type of boundary is significant in the study of human geography because it reflects an acknowledgment of the complexities of cultural and ethnic diversity. These boundaries are often established through negotiations and agreements, taking into account the distribution of different cultural or ethnic groups to create more stable and equitable political divisions.

On a map, a consequent boundary is depicted as a line that aligns closely with cultural or ethnic divisions. This may involve following natural features that also serve as cultural divides, but its defining characteristic is its alignment with cultural groups rather than physical geography.

superimposed boundary

A superimposed boundary is a type of political boundary that is placed over and ignores existing cultural patterns in a region. This kind of boundary is typically established by external powers, often through colonization or conquest, without regard for the existing cultural, ethnic, or geographic realities on the ground. Superimposed boundaries are imposed without the consent or consideration of the people living in the area.

Superimposed boundaries are significant in the study of human geography because they often lead to conflicts and tensions. These boundaries can split ethnic or cultural groups across two different political entities or force disparate groups into a single political unit, leading to issues of governance, identity, and conflict. Many of the world’s current geopolitical conflicts can be traced back to the legacy of superimposed boundaries.

On a map, a superimposed boundary is represented as a line that cuts across cultural or ethnic divisions without aligning with them. These boundaries may appear straight or arbitrarily drawn, reflecting their imposition without regard to the existing cultural landscape.

The colonial boundaries created by Europeans (also known as the Berlin Map) as well as most of the borders in Africa today are examples of superimposed boundaries. Because these borders were created and drawn by outsiders, and not the populations that live in an area, superimposed borders often set the stage for longterm instability.

geometric boundaries

A geometric boundary is a type of political boundary that is formed by straight lines and often follows a specific degree of latitude or longitude. These boundaries are not influenced by physical, cultural, or ethnic differences and typically do not conform to natural features of the landscape. Geometric boundaries are often the result of historical treaties, colonization, or agreements made without much consideration for the natural or cultural divisions in the area.

The significance of geometric boundaries in human geography lies in their arbitrary nature. They can create situations where diverse cultures or ecosystems are grouped within the same political entity or where similar groups are divided. This can lead to various issues, including border disputes, cultural conflicts, and challenges in resource management.

On a map, geometric boundaries are depicted as straight lines that might cut across various geographical features without aligning with them. These boundaries are often seen in areas with colonial history, where borders were drawn by colonial powers without regard to existing cultural or geographic realities.

relic boundaries

A relic boundary is a type of political boundary that no longer functions as an international border but still reflects historical boundary lines. These boundaries have historical significance and can be seen in the cultural landscape, but they do not have any legal standing in the present. Relic boundaries are often remnants of former states, empires, or other political entities.

The importance of relic boundaries in human geography is that they can still influence the cultural and physical landscape of an area. For example, they may still be visible in the form of old walls, fortified boundaries, or changes in land use patterns. Even though they no longer serve as actual political borders, they can continue to shape the identities and cultural practices of the people living near them.

On a map, relic boundaries might be represented by dashed or faint lines, indicating their historical but not current political relevance. These boundaries often tell a story about the past political geography of a region and can be important in understanding the historical context of current geopolitical situations.

The Great Wall of China is another example of a relic boundary.

natural boundary

A natural boundary is a type of political boundary that is defined by physical geographic features such as rivers, mountain ranges, or coastlines. These boundaries are formed by natural characteristics of the landscape, rather than by human agreements or conventions.

Natural boundaries are significant in human geography for several reasons. They often provide a clear and defensible border between different political entities, which can reduce conflict. Additionally, these boundaries can influence the development and interaction of human societies by acting as barriers or conduits for migration, trade, and communication. However, natural boundaries can also be sources of disputes, especially if the features change over time (like a river changing its course) or if resources located along the boundary are valuable or scarce.

On a map, natural boundaries are represented by lines that trace the physical features they correspond to. For example, a boundary formed by a river would be depicted as a line following the river’s course, and a boundary formed by a mountain range would trace the peaks or ridgelines of the mountains. These boundaries are often seen as more “organic” since they are based on the natural landscape rather than human decisions.

Rio Grande river, border between United States and Mexico.