B. It maintained religious tolerance, peace with Indians, and a liberal government.
Explanation:
Pennsylvania began as a land grant given by king Charles II to William Penn, an English Quaker, in 1861. Originally, it was a territory for Quaker colonization; they had left England because of religious intolerance. The colony turned into a safe haven for all those escaping religious bigotry - not only Quakers.
No, it is false that the Vietnam War continued until the summer of 1979. The official end date of the war in terms of US involvement was 1975, although the conflict lasted locally for quite some time afterwards.
In the long geological history of the Earth, humans first appeared during the Pleistocene Epoch, which dates back 1.6 million years to 10,000 years ago.
