What was ironic about prince henry the navigator?

Which is the best example of a primary source ducument useful in the study of history ?

This law states that the "chinese laborers to this country endanger the good order of certain localities" in the united states. which of these would represent a "locality" that would most likely have wanted this law created and passed? a) dallas b) chicago c) atlanta d) san francisco

How do private property rights serve as an incentive in a free enterprise economy ?