Answer:
He invoked the Neutrality Act, making sure neither Germany and Japan nor Britain and France, could buy anything from the U.S. When Poland was invaded, though, Congress changed its mind. The Neutrality Act of 1939 again allowed the U.S. to sell war materials to warring nations on a cash and carry basis.
Because they are all in sense racist laws. They all demonized black people. From KKK thrusting their lives, Jim Crow Laws singling them out.
A is the answer. The Supreme Court can rule laws and regulations unconstitutional.
The land west of Mississippi during the 1700's and most of the 1800' was land that was still dominated by the Native American tribes and the Spanish, and it was not safe at all for people to move in those parts considering the very bad relations with the native populations in that time of period. Also, the authorities, still hadn't tried to motivate people and try to make them settle in those areas with some measure that was going to be attractive for them.
