Asian American and Pacific Islander (AAPI) Heritage Month is an annual celebration held in May in the United States to recognize and honor the contributions and influence of Asian Americans, Native Hawaiians, and other Pacific Islander Americans to the history, culture, and achievements of the country

. The month of May was chosen to commemorate two significant historical events: the arrival of the first Japanese immigrant to the United States on May 7, 1843, and the completion of the transcontinental railroad on May 10, 1869, which was largely built by Chinese immigrant laborers

. Originally established as Asian/Pacific American Heritage Week in 1978 by President Jimmy Carter, the observance was expanded to a full month in 1990 and officially designated by Congress in 1992

. The month celebrates the diverse cultures, histories, and achievements of communities with roots throughout the entire Asian continent and the Pacific Islands, including Melanesia, Micronesia, and Polynesia

. AAPI Heritage Month also serves as a time to acknowledge both the historical and ongoing challenges faced by these communities, promoting awareness and fostering a more inclusive society

. In summary, AAPI Heritage Month is a dedicated time each May to celebrate the rich heritage and significant contributions of Asian American and Pacific Islander communities in the United States