Answer:
Interest groups are formed to promote the interests or concerns of their members. They are primarily concerned with influencing public policy. Because a key function is to exert pressure on political decision-makers, interest groups are sometimes referred to as 'pressure' or 'lobby' groups.
President Hoover believe that the federal government should stay out of the affairs of the people, and did next to nothing in regards to the suffering of the people in yeb Great Depression.
The communists party of the Czechoslovakia
There are many reasons but here's two
1. The 'war' and invasion etc was fought in the West so the province that you are going to have to raise troops and revenue from to fight the war is the same one where all the fighting takes place.
Meanwhile the 'East' had Anatolia as a heartland for revenue and recruits that was untouched .
<span>2. There is a lot of evidence that it wasn't simply 'barbarian' invasion but also a large element of rebellion against central authority by local forces. These are the people who are supposed to supply your troops and revenue.</span>