Which event best identifies the beginning of the so called dark ages in europe 1.) rise of the arab empire 2.) spread of the bubonic plague 3.) fail of the roman empire 4.) initiation of the hundred years war

number 4. should be the correct answer

to reform the distraught soviet union, the democratization of the communist party was promoted through party secretary mikhail gorbachev's policies of “perestroika” and “glasnost.” perestroika refers to the reconstruction of the political and economic system established by the communist party.