I believe the 1st one is A and second one is D
The Era of Good Feelings marked a period in the political history of the United States that reflected a sense of national purpose and a desire for unity among Americans in the aftermath of the War of 1812.
Peisistratus was the first Athenian tyrant if that is what you are looking for
B) Human knowledge had doubled every century until the 1900s.
“Knowledge Doubling Curve”, theory created by Buckminster Fuller and exposed in his book Critical Path (1982), held that until 1900 human knowledge had doubled approximately every century. And by the end of World War II, the frame time was reduced: knowledge started to double every 25 years. The pace of knowledge growth would continue increasing.
