What major geological obstacle slowed the expedition's movement up the Missouri river? This is about Lewis and Clarks journey into the West btw :) ​

Look at the map of cities in the united states at the turn of the twentish century what impact did railroads have on cities across the united states at the turn of the twentish century

Acharge on imported goods is known as what kind of tax? income excise personal

Some historians argue that the changes brought by industrialization caused americans to beomce a more secular people. to what extent do you agree or disagree, and why? use evidence from chapter 18 to make your case.