Answer:
these are definitions from wikipedia
Explanation:
Communism is a philosophical, social, political, economic ideology and movement whose ultimate goal is the establishment of a communist society, namely a socioeconomic order structured upon the ideas of common ownership of the means of production and the absence of social classes, money and the state.
Socialism is a political, social, and economic philosophy encompassing a range of economic and social systems characterised by social ownership of the means of production and workers' self-management of enterprises. It includes the political theories and movements associated with such systems.
2.The Soviet Union blockaded Berlin.
3.North Korea attacked South Korea.
4.All members agreed to treat an attack on one as an attack on all.
5.Russia acquired Poland and Bulgaria.