D : Germany invasion of France
It meant that as soon as one country falls under communist control, another country would fall and so on. Vietnam at the time was split into North (communist) and South (being attacked by North) and the US didn't want communism to spread, reasoning that it might eventually come to the US if nothing was done.
William Penn referred to his colony as a "Holy Experiment" because in his colony people were free to practice any religion they preferred. There were no restrictions and everybody had to live in harmony. Immigration also had no restrictions and people from other places could easily come and settle there.
Answer:
<h2>The DOI was significant because it was one of the first colonial breaks from a monarchy.</h2>
