In this task you will be given a question and a passage. You need to determine if the answer to the question is contained in the passage. If the answer can be found in the passage you should output 'True'. If the answer cannot be found in the passage you should output 'False'.

Passage: 'French exploration of the area began during the reign of Louis XIV, but French Louisiana was not greatly developed, due to a lack of human and financial resources. As a result of its defeat in the Seven Years' War, France was forced to cede the east part of the territory in 1763 to the victorious British, and the west part to Spain as compensation for Spain losing Florida. France regained sovereignty of the western territory in the secret Third Treaty of San Ildefonso of 1800. But strained by obligations in Europe, Napoleon Bonaparte sold the territory to the United States in the Louisiana Purchase of 1803, ending France's presence in Louisiana.'. Question: 'the french gained control of louisiana because they'.
True