Answer:
They feared that Catholic and Jewish immigrants would change the country's character and They distrusted people who looked different and couldn't speak English.
I believe the correct answer is Bacon's Rebellion.
It was an event which happened in 1676 when lower classes rebelled against the system in which they were not being treated equally as the upper classes. This was the first rebellion of such nature and it lead to greater democracy in the States.
With the help of Patrick Henry of Virginia; one of the first colonists to rebel against the British, the ultimate rebellion started its course. There were protests because there was injustice against the colonies. The British king used the colonies as tool by taxing heavily to earn more money. There had to be an army to fight him.
The correct answer is option D " …in a changing world worthy institutions can be conserved only by adjusting them to the changing time". Calvin Coolidge was the 30th president of the United States, a republican lawyer that had a successful political life. His philosophy against active government was that institution should change with the government in order to stay active and productive to the society.