The sale by France of Louisiana to the United States made it necessary to define the boundaries between France and Spain. and in 1819 the Sabine River was agreed upon between the United States and Spain as the boundary. From 1821 to 1834 colonists from the United States settled southeast Texas. The colony of Stephen F. Austin was the first and most important. It covered the lower Brazos and Colorado rivers. including the land where the city of Austin now stands. In 1830 the Mexican Congress prohibited further Immigration from the United States. and in 1833 the people of Texas tried to secure from Santa Ann a separate State government. but failed. and in 1835 Texas revolted. In 1836 (April 21) Gen. Sam Houston defeated the Mexican army at San Jacinto and captured Santa Ann.
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Immigration