Why did the British call the Second
Continental Congress "a den of traitors"?

answer:

Delegates met in the congress in order to bring about protest against the stamp act imposed by  

the British government. It marked the first point in which the colonies began to officially oppose  

the British Government

Explanation:

in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

explanation:

d. migration