Answer:
The correct option is "a"
Explanation:
There are several books on this historical topic of Spanish history. One of the many books written on this topic is "<em>Spain's Emigrants to the New World 1492-1592</em>" written by the author V. Aubrey Neasham.
Form the study of history we come the know that the first option - option a <em>Many of the early arrivals came to direct Native American labor, </em>is correct.
The correct answer is the last one, signing the Camp David Accords. Those were the agreements between Israel and Egypt signed in 1978, that led to the first peace treaty between these two countries. The negotiations took place at the U.S. presidential retreat at Camp David, Maryland while Jimmy Carter was the president.
Panama Canal--the land for the canal was provided after aiding the Panamanians in their independence from Columbia.
The Panama Canal allowed for quicker shipping between the west to the east coast of the US.