Why was it important to spanish colonists that their slaves did not know the terrain of the land?

Are there any english colleges in south korea for americans that is international ?

What is the main reason the united states removed the taliban from power shortly after the september 11 2001 attacks ?

How would high tariffs hurt america? a. fewer immigrants would be able to move to america b. sales of american products to other countries would go down c. americans would sell more goods to other countries d. goods imported from other countries would cost less