Why did robert de la salle establish trade posts along the mississippi river

What is the connection among sectionalism,slavery,and states’right as causes of the civil war? how did the southern response to the 1860 election results demonstrate this connection

What were some of the great finds that portuguese sailors discovered after prince henry established his navigational school in 1415? the gold coast and the cape verde islands gold and silver ore china the cape of good hope

Before the civil war, the south’s economy was based on enslaved labor. large cities. immigrant workers. factories.