describe the two types of changes that national boundaries experience on a regular basis. Provide an example of each.

The two type of changes are:

1. Independence

When a certain nation declared its independence, their territory is no longer belong to the country that colonize it. Which means that the national boundary undergone a change in ownership. Before the independence, it belonged to the country that colonize the nation. After the independence it belong to the nation itself.

Example: South American countries declared independence from Spanish Empire

2. State Annexes

During annexation, a certain territory is acquired by another country (could either be done through forces or consensual method). When annexation occurs, the national boundaries of the country that being annexed now belong to the nation that annexed it.

Example: When West Papua was acquired by Indonesia.