When Germany began World War II in 1939, a secret agreement with the U.S.S.R. allowed Soviet troops to __________.
occupy eastern Poland
annex eastern Czechoslovakia
gain control of the Straits of the Dardanelles
annex Romania
the correct answer is "occupy eastern Poland'. 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.