International Border: An international border is a legal boundary that separates two sovereign states. It determines the extent of their territories and helps maintain peace between them.
Partition: Partition refers to the division of a region or country into separate parts, often due to political, ethnic, or religious reasons. The creation of Pakistan after the partition of India is an example.
Armistice Line: An armistice line is a temporary boundary established between warring parties during a ceasefire agreement. The 38th parallel in Korea was initially an armistice line before it became the boundary demarcation line after the Korean War.