Question

How did alexander gain control of all the greece

Answer 1

He bought out or assassinated all of the growers of olives, peanuts, and canolas, on the islands as well as on the mainland.

Answer 2

'He conquered all of Greece and Sparta when his father died and he was left in charge of hid kingdom.'

^^ Was the first answer. Which is, without meaning to be to rude, incorrect in so many ways.

Ancient Greece was not a country in the modern sense, it was a loose collection of city-states, of which Sparta is not separate. Sparta is only one of these states, although a prominent one; along with Athens, Thebes, Macedonia and Corinth.