The most influential and powerful members of a political party are most likely to be found inside the national party level of the party and at its highest levels. If the President of the United States is from one particular party they are considered the head of the political party nationally making them the most powerful member of the party.
I’m sorry but can’t u just search up? But the answer but it’s Lyndon Johnson I think
Because of unsolved issues. Like establishing colonial empires such as Germany concerned with their land.
