A. Unrestricted Submarine Warfare.
This caused Germans to attack vessels that carried US citizens, bringing the US into the war.
Answer:
When European settlers arrived on the North American continent at the end of the fifteenth century, they encountered diverse Native American cultures—as many as 900,000 inhabitants with over 300 different languages. These people, whose ancestors crossed the land bridge from Asia in what may be considered the first North American immigration, were virtually destroyed by the subsequent immigration that created the United States.
The answer is A... sort of. Two-thirds (34) of the state legislatures may apply to Congress to call a Convention of the States to propose amendments to the Constitution. Then, three-fourths (38) of the state legislatures must ratify those proposals before they actually become amendments to the Constitution.
What did special religious observances in both the Aztec and Spanish calendars provide for people? The correct answer is Fun and entertainment.