What ethnic communities that were created by immigrants who settled in big American cities in the late 1800s?

In the late 1800s, numerous ethnic communities emerged in major American cities due to Immigration. Notable examples include the Irish in Boston and New York, Italians in Chicago and New York, and Eastern European Jews in cities like New York and Philadelphia. These communities often formed tight-knit neighborhoods, preserving their cultural traditions while contributing to the urban fabric of America. They played a crucial role in shaping the social, economic, and political landscape of the cities they inhabited.