Berlin wall was built in August 13, 1961
April 12, 1961 bay of pigs invasion
October 30, 1956 Suez crisis
Universities grew up around cathedrals and courses of study helped educate clergy.
According to Albert Barnes, their mistake was that they didn't speak against slavery. Although many of them believed that slavery was against god and against the idea that god made everyone equal, they didn't do much against it out of many reasons, either they thought it was a necessary evil or they were afraid of the public reaction.
A is the answer To the question :)
The previous constitution, called the Articles of Confederation, gave state governments more authority. Led by Patrick Henry of Virginia, Anti-Federalists worried, among other things, that the position of president, then a novelty, might evolve into a monarchy