Final answer:
All the provided options are correct except for, he deafted mark antony and cleopatra.
Julius Caesar carried out numerous social and governmental reforms, instituted the Julian calendar, and created jobs through public works. He appointed himself dictator for life, which alarmed many Romans and ultimately led to his assassination. He did not, however, defeat Mark Antony and Cleopatra, nor set up a democratic government.
Step-by-step explanation:
Gaius Julius Caesar, a prominent Roman general and statesman, made several significant contributions and reforms during his tenure in power. Notably, he initiated a comprehensive program of social and governmental reforms after defeating his enemies and assuming control of the Roman government in 45 BCE. This included the implementation of the Julian calendar and various public works that created jobs.
Moreover, Julius Caesar significantly changed the political landscape by appointing himself dictator for life, filling the Senate with his supporters, and establishing military colonies as rewards for his loyal troops, which also fortified Roman power in conquered territories. He made plans for a massive invasion of Persia, although his life was cut short before he could undertake this campaign. Contrary to one of the statements, Julius Caesar never defeated Mark Antony and Cleopatra, as they were part of the subsequent historical chapter involving his adopted heir, Augustus (Octavian).
Caesar's accumulation of power and indefinite dictatorship alarmed many, leading to his assassination in 44 BCE. Despite his reforms being geared towards centralizing power and streamlining governance, the creation of a democratic government was not among them; rather, his actions contributed to the demise of the Roman Republic and paved the way for the ascent of the Roman Empire under his successor, Augustus.