What was the connection between mount olympus and olympia in greece?

Completely different places. Mount Olympus is in the north-central part of Greece and is, obviously, a mountain. Olympia was a city-state in the Peloponnese (the hand-shaped peninsula that forms southern Greece). The Olympic Games were held at the shrine of Zeus in Olympia, not on Mount Olympus.

Several separate states were ruled by different governments, all part of an organization known as the German Confederation. 
Hope that helped.