Assertion: communism | /r/CapableOf | become by 1920
Facets:
value: along with social democracy
type: OTHER
Source sentences:
text: Along with social democracy, communism became the dominant political tendency within the international socialist movement by the 1920s.
text: By the 1920s, communism and social democracy had become the two dominant political tendencies within the international socialist movement, with socialism itself becoming the most influential secular movement of the 20th century.