It is thought that the hittites began by: a) immigrating in the river valleys b) naming their capital city hattusa c) were farmers and settlers d) invading and conquering communities in mesopotamia and asia minor

D is the correct answer.

Explanation:

The Hittites had occupied the region of Asia Minor before 1700 BCE. They developed their culture from the Hatti people and then formed an empire. The empire was a threat to the nation of Egypt.

They are mentioned in Hebrew Tanakh and the bible and also in the Egyptian documents. Present-day historians divide the Hittite kingdom into two periods. The old kingdom (1700-1500) and the The Hittites had occupied the region of Asia Minor before 1700 BCE. They developed their culture from the Hatti people and then formed an empire. The empire was a threat to the nation of Egypt.

 The Hittite kingdom reached its peak during the reign of King Suppiluliuma First ( c.1344-1322 BBCE). After the reign of his son Mursilli Second (c. 1321-1295 BCE), after which it declined. The reason for its decline was the attacks by Sea Peoples and the Kaska tribe. Later it fell to Assyrians.  

because mexico wanted to choose a centralized location