Which countries were strongly influenced by Confucianism?

Confucianism has exerted a profound influence on the spiritual, political, and social life of several East Asian countries, primarily through the spread of Chinese literate culture. Beyond its origins in China, the tradition has significantly shaped the history and values of the following nations:1

• Korea: Historically, the Joseon dynasty (1392–1910) was arguably the most thoroughly Confucianized society in history. Today, the influence of the tradition remains deeply embedded in the social and political fabric of South Korea.2
• Japan: While never as thoroughly Confucianized as Korea, Japan integrated Confucian teachings into its intellectual and social life, with educated individuals widely exposed to Confucian texts by the end of the 17th century.2
• Vietnam: Confucianism extended its reach into Vietnam, where it influenced the nation's social and political structures.1
• Singapore and Taiwan: These regions are recognized as part of the "Sinitic world" where Confucian values continue to inform modern institutions, education, and social ethics.3

These countries, often referred to as the "Sinitic world," share a legacy where Confucian principles have indelibly marked their patterns of government, education, and family life.13