Well first off, I would notify a parent and let them know what your brother did.
Second off, don't let your brother hit you with things.
And third, if he's being rude, you have the right to ignore him.
The correct answer is "<span>occupy eastern Poland</span>'. This was called the Ribbentrop-Molotov Pact, named after the foreign ministers of the two countries, which was a treaty in which the two powers divided Europe among themselves.