Why did thomas jeferson appear in the 20 dollar bill?

Thomas Jefferson appears on the $20 bill primarily because of his significant contributions to American history, particularly as the principal author of the Declaration of Independence and his role as the third President of the United States. The $20 bill was introduced in its current design in the early 20th century, and Jefferson's legacy as a founding father and advocate for democracy and individual rights made him a fitting choice for this denomination. His image honors the principles of liberty and governance that are central to American identity.