The Hungarian Communist Party (HCP) was a political party in Hungary that played a significant role in the country's history during the 20th century. Founded in 1918, it aimed to establish a communist state based on Marxist-Leninist principles. The party gained power after World War II and became the ruling party in Hungary, aligning closely with the Soviet Union. During its rule, the HCP implemented various economic and social reforms, but it also faced criticism for its authoritarian practices and suppression of dissent. The party's influence waned after the 1956 Hungarian Revolution, leading to its eventual dissolution in 1989 as Hungary transitioned to a multi-party democracy.