Revolutions of 1917–1923The Revolutions of 1917–1923 were a revolutionary wave that included political unrest and armed revolts around the world inspired by the success of the Russian Revolution and the disorder created by the aftermath of World War I. The uprisings were mainly socialist or anti-colonial in nature. Some socialist revolts failed to create lasting socialist states. The revolutions had lasting effects in shaping the future European political landscape, with for example the collapse of the German Empire and the dissolution of Austria-Hungary.
VanguardismVanguardism, in the context of Leninist revolutionary struggle, relates to a strategy whereby the most class-conscious and politically "advanced" sections of the proletariat or working class, described as the revolutionary vanguard, form organizations to advance the objectives of communism. They take actions to draw larger sections of the working class toward revolutionary politics and to serve as manifestations of proletarian political power opposed to the bourgeoisie.
World communismWorld communism, also known as global communism, is the hypothetical ultimate form of communism which of necessity has a universal or global scope. The long-term goal of world communism is an unlimited worldwide communist society that is classless (lacking any exploitation of man by man), moneyless (lacking a need for currency to regulate human behavior), and stateless (lacking any violent compulsion of man by man), which may be achieved through an intermediate-term goal of either a voluntary association of sovereign states (a global alliance) or a world government (a single worldwide state).
TrotskyismTrotskyism is the political ideology and branch of Marxism developed by Russian revolutionary Leon Trotsky and some other members of the Left Opposition and Fourth International. Trotsky described himself as an orthodox Marxist, a revolutionary Marxist, and a Bolshevik–Leninist as well as a follower of Marx, Engels, Vladimir Lenin, Karl Liebknecht, and Rosa Luxemburg.