Direct election of U.S. senators is your answer!
It granted citizenship and equal civil and legal rights to African Americans and slaves who had been emancipated after the American Civil War
The information found by Lewis and Clark showed many new places to settle, what the new land was like, and what could be accomplished in those areas. They found more land to farm and build homes. They also found some of the major rivers and landmarks of today.
I am that odd creature the female bull snake, that is your answer