Cession (noun)

The act of giving up or surrendering control or possession of something, especially territory, to another.

Origin:

Late 16th century (denoting the act of yielding or surrendering): from latin cessio(n-), from cedere "yield".

Examples:

1. The cession of the Crimea to the Russian Federation was not recognized by the international community.
2. After the treaty, the cession of land to the native tribes took place.
3. The cession of power was accomplished with little resistance.
4. The cession of Hong Kong to China was a major event in modern history.
5. The cession of the Louisiana territory greatly expanded the size of the United States.