to become more powerful and larger
he really invaded Poland Hungary and other neighboring places but he did not invade the USA
The Dorians invaded Greece in 1000 BC
there where many mountains unlike other places
1940
If you name the 'other places' perhaps you might get an answer.
Xanthos, Greece and lots of other places in Greece. Xenia in Kansas
Persia.
The USA is bigger than Greece. So is Canada, and many other places.
480 BCE.
the Soviet Union
yes, Italy, then Germany.
If your are referring to the ottoman occupation of greece...then no. Turkey didn't invade Greece, the Ottoman empire invaded the Byzantine empire. The decisive blow came when the capital fell on may 29 1453