The 20s began after World War 1 and many US citizens believed that it was Wilson's progressive and liberal politics that made them join such a gruesome war that they didn't even have to participate in. They wanted to become more conservative and republicans easily won, however, the great depression came and since Hoover couldn't solve it, and he was a millionaire and wasn't very popular, people turned to those who could solve it. Since it was FDR who could do it, it was thanks to the events in the 20s and 30s that many of the policies that made America great after World War 2 were introduced.
Both political parties and interest groups are formally organized.
interest groups are an organization of people who share a common interest and work together to protect/ promote that interest by influencing the government.
Interest groups very greatly in size, aims, and tactics. And as far as political parties use campaign finance committees to raise funds for election purposes.
The cold weather minimized the spread of life-threatening illnesses
