Why was finding a northwest passage so important to many early explorers?

The revolutions in latin america in the 19th century resulted in political independence from europe the end of slavery in each country the establishment of stable democracies social and economic equality for all

Which action by the us war department angered chief red cloud to the point that he refused to sign the treaty of fort laramie ? a) the killing of buffalo by the united states troops b) the appointment of troops to the powder river basin c) the burning of parts of the powder river basin d) the murder of chief red cloud’s wife

After the civil war which president was called a "carpetbagger"?