Cause: the greeks revolt against the ottoman turks.
effect: ?

The result was Greece became an independent kingdom. It wasn't an immediate result, in fact the War of Greek Independence spanned from 1821-1832. Alexandro Ypsilantis started the revolt by crossing the Prut River with a small army of troops. He was defeated but other revolts broke out the Peloponnese, Greece and several small islands. Eventually they were able to take over Peloponnese and declare the independence of Greece.