The rise of communism refers to the emergence and establishment of communist ideologies and regimes, particularly in the early 20th century, as a response to social, economic, and political upheaval. This period saw the spread of Marxist ideas advocating for a classless society and the abolition of private property, leading to significant changes in government structures, especially after the Russian Revolution in 1917. The rise of communism significantly influenced global politics, economies, and societies during the interwar period as various countries faced economic crises and political instability.