Final answer:
Urbanization increased in the late 19th and early 20th centuries due to advancements in technology and industrialization, as well as a wave of immigration.
Step-by-step explanation:
Urbanization increased in the late 19th and early 20th centuries due to a combination of factors. The advancements in technology and industrialization led to the need for a large workforce, prompting people to move to urban areas where factories were located. The introduction of new technologies like electric lights and machinery allowed factories to run around the clock, requiring workers to live close by. Additionally, a wave of immigrants from central, eastern, and southern Europe arrived seeking better economic opportunities and settled near the cities where they arrived.