The correct answers should be the will of the people, a signal from USSR leadership toward democracy, and the weakness of the government.
The people from the area wanted to live freely and wanted to connect with the rest of Germany and form an independent democratic German state. There were no anti-west sentiments and the military was not as strong so it's not those two. USSR was leaning towards democracy due to their policies of glasnost and perestroika and many other things, but the USSR government was generally getting weaker and losing power and influence which led to Germans getting even more power to separate and connect with West Germany.
With respect to global connections, association with "the European Union" offers the brightest immediate future for many African countries, since this union is comprised of a variety of countries with economic ties to Africa.
