Redrawing Borders: Redrawing borders refers to the act of changing the shape, size, or location of a country's boundaries. For example, after World War I, several countries in Europe experienced redrawing of their borders.
Partition: Partition is the division of a territory into separate parts usually due to political or religious differences. An example is the partition of India in 1947 into India and Pakistan based on religious differences between Hindus and Muslims.
Secession: Secession occurs when a region or group within a country decides to break away and form its own independent state. An example is South Sudan seceding from Sudan in 2011 after years of conflict along ethnic and religious lines.