Because of low wages and overcrowding, many immigrants lived in tenements or cheap apartments that were constantly being fixed and brought up to standard by landlords. constructed without building, fire, or safety codes in place. slowly improving because of from the city government. quickly improving because of the passage of new state laws.

constructed without building, fire, or safety codes in place.

The tenements were urban apartment buildings that served as housing for poor factory workers.  They were often poorly constructed without safety codes and overcrowded. Many immigrants were forced to live here.

The correct answer is B

Explanation:

Mountain regions is the correct answer

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