How did Chandra Gupta Maurya unite India against foreign invaders?

Chandragupta was the founder of the Mauryan dynasty (reigned c. 321–c. 297 BCE) and the first emperor to unify most of India under one administration. He is credited with saving the country from maladministration and freeing it from foreign domination.

i think that the answer is polishing peanuts

julius caesar turned the roman republic into the roman empire by coming in and taking the "dictator" role during the time of a civil war (elites vs lower classes) winning battles and reputation, then declaring him dictator for life

hope this : )