Because the blacks needed a period of probation and instruction. A period is long enough for the black to have forgotten something of the condition as a slave.
Answer:
Obstacles:
1.The sea, america would normally be hard to access for non-mexican immigrants due to the wide ocean blocking their way. They often take this dangerous journey across as they have no other choice.
Pull factors:
1.For most non-americans (like me), the country would probably be fantasized and thought to be a great modern country full of amazing opportunities. This may make them wish to immigrate to America.
A. Only power given in the constitution
It was "Andreas Vesalius" who was the sixteenth-century physician who published the first accurate and detailed picture of human anatomy, since he was one of the most advanced and knowledgeable surgeons of his time
