In what year was the U.S. Constitution signed?

How long is a U.S. Senate term? How long is a term in the U.S. House of Representatives? Who is first in the presidential line of succession after the Vice President? What are the first ten amendments to the U.S. Constitution called? In what year was the Declaration of Independence adopted? Which city served as the first capital of the United States under the Constitution? In which city was the Declaration of Independence signed? In which city is the Liberty Bell displayed?