The accurate statements about Julius Caesar's accomplishments are:
1- He reformed government structure and power.
2- He conquered Spain and expanded the empire.
3- He reformed the Roman calendar.
4- He ended 100 years of civil war.
Julius Caesar's accomplishments include significant military conquests, reforms in government and the calendar, and bringing an end to prolonged civil unrest in Rome.
Caesar's accomplishments had a profound impact on the Roman world, shaping its political landscape, military power, and cultural development.
His reforms and expansions laid the foundation for the Roman Empire, which would go on to become one of the most powerful and influential empires in history.