Annexation is the process by which a country or state takes control of a territory that was previously outside its borders. This can happen through various means, such as military conquest, treaties, or political agreements. The annexed area typically becomes part of the annexing country, often leading to changes in governance and laws. A well-known example of annexation is the Annexation of Crimea by Russia in 2014. This event sparked international controversy and led to sanctions against Russia, as many countries viewed the annexation as illegal under international law. Annexation can significantly impact the affected population and the geopolitical landscape.