Final answer:
Julius Caesar became dictator for life through political maneuvers and appointments. He was popular with the people due to his military victories, but unpopular with the Senate because of his accumulation of power.
Step-by-step explanation:
Julius Caesar became dictator for life through a series of political maneuvers and appointments. He had himself appointed as dictator in 48 BCE and later made the position indefinite and permanent. Caesar was popular with the people because of his military victories which made him famous and powerful. However, he was unpopular with the Senate because his accumulation of power threatened their aristocratic privileges.