Which statement accurately analyses how federalism has changed over time in the united states?

The framers of the United States Constitution based our federal government on federalism. ... Federalism has evolved over the course of American history. Some important events have shaped the balance between the national and state governments so that federalism best suits the needs of the country at that time.

the Louisiana purchase was about president Thomas Jefferson buying Louisiana and other States from France

another part about Louisiana purchase was about Lewis and Clarks expedition for an map of Louisiana territory that helped out pioneers for mountain passes and mining spots

Explanation:

its not 100 I don't think but it pretty much what the Louisiana purchase was about