The rapid URBANIZATION of cities led to overcrowding and increased pollution.
The procress of the population shifting from rural areas to urban areas, resulting in the growth and development of cities.
The United States experienced a wave of IMMIGATION in the late 19th and early 20th centuries, with people coming from all over the world in search of better opportunities.
The act of individuals moving from one country to another with the intention of settling there permanently.
The GILDED AGE was a period of economic growth and prosperity in the United States, but it was also marked by social inequality and corruption.
Gilded refers to a time period that appears wealthy on the outside but is often marked by corruption and social inequality.
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