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Durkheim was interested in suicide primarily because he wanted to b) show that what was thought to be a personal act was patterned by social forces.
A lot of social factors may be the cause of a person’s decision to perform suicide. For example, a person that is a victim of bullying may decide to end his/her life because of sheer depression.
The first civilizations developed in North Africa, Middle East, and South and East Asia because of the advantages that this areas offered to the people inhabiting them. The biggest advantage were the big rivers with long and wide fertile plains beside them, which enabled the people to be involved in agriculture and produce big amounts of food and even reserves. Since the food problem was solved, they were able to concentrate on other things in their spare time and started to develop architecture, sciences, philosophy, writing systems...
To become a U.S. citizen, you need to be at least 18 years. You should have lived in the U.S. for at least 5 years.(these steps are for naturalization). So the answer is probably D. Hope i helped.