Which of the following was an effect of increased migration to cities during the early 20th century? 1. a decline in racial discrimination 2. a decrease in the nation's agricultural output 3. increased power for political parties 4. an increase in women working outside of the home

The correct answer is alternative 2: a decrease in the nation's agricultural output.

Having people increasingly moving into the cities pushed industrialization, but at the same time, agriculture had a major decrease due to the fact that people that once worked on farms would leave their land to try a new life in the cities.

the answer to your question is a because laws act as guidelines as to what is accepted in society. without it there would be conflicts between social groups and communities. it serves as a norm of conduct for citizens.