Explanation:
a )they help historians focus on the effect of one important idea on different societies over time
That's Easy! The people who planted in Ireland were the Irish! #Brainliest:)
The correct answer is <span>George Washington. I believe you wanted to say primacy. The idea is that there should be a strong national government and it doesn't get any earlier than him since he was after all the first president of the United States. He didn't like the idea of parties because he believed they would split the people and the government.</span>