In what year did the german democratic republic (gdr) and the federal republic of germany (frg) unify? what kind of government was formed

Both the German Democratic Republic and the Federal Republic of German unify on 3rd October 1990. The Federal Republic formed a new government.

Explanation:

After World War II, German became a part of the conflict as the USSR began to expand its hold on countries which came under the seize of the Red army. Germany split between the Communist and democratic countries which we came to be known as West and East Berlin.  The tension began between the two and came to an end when Günter Schabowski announce the restrictions on visas to lessen without delay. After the collapse of communism in Germany led to the reunification of the country and East Berlin joined the Federal Republic to form a new government.