The red scare of 1919-1920 was provoked by

After the events of World War I, the red scare of 1919-1920 was provoked by the fear of communism, but also socialism, anarchists and immigrants, within industrialized nations, such as the United States.

(1)representation based on state population (2)all states have equal representation apex

to tell the truth it is a mix of the a and d because after the romans argued among themselves outside forces took control however it is mostly d.