MACA meaning in Community ?

Mongolian Americans are American citizens who are of full or partial Mongolian ancestry. The term Mongol American is also used to include ethnic Mongol immigrants from groups outside of Mongolia as well, such as Kalmyks, Buryats, and people from the Inner Mongolia autonomous region of China. Some immigrants came from Mongolia to the United States as early as 1949, spurred by religious persecution in their homeland. However, Mongolian American communities today are composed largely of migrants who arrived in the 1990s and 2000s, as the Socialist Mongolia gradually collapsed and restrictions on emigration were lifted.