A subsequent boundary is drawn after people have settled the land

The exam asks you to separate it from three neighbours that look alike.

Settlement comes first, the line second

The test for a subsequent boundary is timing. People lived in the area, built towns and formed communities before the line was fixed. Because those communities already differ in language, religion or ethnicity, the people drawing the line usually try to follow those differences. A border between two language areas, for example, might be placed so that each village ends up in the state whose language most of its people speak. When a line is drawn specifically to match such a divide, the course calls it a consequent boundary, also known as an ethnographic boundary. It can be read as a special case of the subsequent type.

Two questions sort the four timing types

The American geographer Richard Hartshorne grouped boundaries by when they appeared relative to settlement. Ask two questions. Was the area settled when the line was drawn? If not, it is an antecedent boundary. If it was, did an outside power impose the line? If yes, it is a superimposed boundary; if no, subsequent. A fourth type, relict, is any border that no longer functions but still shows on the ground, such as surviving stretches of the Berlin Wall.

Examples that fit

After the First World War the peace treaties redrew much of Central and Eastern Europe partly on the principle of national self determination, using language to decide which state received which area. Inside Bosnia and Herzegovina, the Inter Entity Boundary Line set by the Dayton Agreement in 1995 separates the Federation of Bosnia and Herzegovina from Republika Srpska. It was drawn largely along the front lines at the end of the war, which by then divided ethnic communities.

India and Pakistan, the case between types

The 1947 Radcliffe Line cut through land settled for thousands of years and largely followed Hindu and Muslim majorities. That looks subsequent, even consequent. But a British lawyer drew it in a few weeks for a departing colonial power. A sample question in the course description groups the partition of India with the Berlin Conference, and the answer it accepts is superimposed. When an outside authority draws the line, superimposed takes priority.

The slip: assuming a cultural line ends conflict

Following the cultural map does not make a border peaceful. Groups are rarely separated neatly, so any line leaves minorities on the wrong side, and the 1947 partition set off one of the largest mass migrations in history. A second slip is judging by shape. A winding border is not automatically subsequent and a straight one is not automatically antecedent. Shape belongs to a different label, geometric. Read the date and the drawer, then decide. Regions such as a shatterbelt show how contested these lines stay.

Putting it in a free response answer

A prompt may describe a border and ask you to identify its type, then explain one effect on the people living near it. State that the area was already settled, name the cultural feature the line follows, and give the consequence, such as a stranded minority or migration. Turn a table of the six CED types into practice with photo to quiz, and see the Unit 4 page for the rest of political geography.

Last updated: 2026-10-03 · Written with AI assistance and reviewed before publishing.