Thomas Jefferson is from Virginia, United States. He was alive from 1743 to 1826. He is primarily known for being one of the Founding Fathers of the United States, the principal author of the Declaration of Independence, and the third President of the United States. He also played a significant role in the expansion of the United States through the Louisiana Purchase. Jefferson was known for his intellectual pursuits, his advocacy for individual rights and liberty, and his contributions to American democracy and government.