Did the geography of mesopotamia make it an easy or diffucult place to live in?

What would lead a historian to consider two events to have a relationship of correlation rather than causation

:) during the cold war, people were afraid of communists, both outside and inside the united states. the red scare and mccarthyism that grew out of these fears were damaging to the american way of life. during the mccarthy years, many of the freedoms guaranteed in the bill of rights were limited. write a paragraph explaining what lessons can be learned from the mccarthy era about what u.s. citizens need to protect in order to preserve the democratic political system and the american way of life.

What is the result of americans’ tradition of joining interest groups? a decline in political parties a large number of interest groups of all sizes a few large interest groups a large number of equally funded interest groups