Between 1820 and 1850, which factors affected European immigration to America?
1.New laws restricted the arrival of immigrants from Russia.
2.New laws restricted the arrival of immigrants from Italy.
3.It became easier and cheaper to immigrate to the United States.
4.It became less expensive for all immigrants to buy property in the US.

3. It became easier and cheaper to immigrate to the United States.

Explanation:

This is a period when many Europeans immigrated on East Coast. People came from different parts of Europe, but mostly Ireland. The main reason was the great famine that struck that country. In comparison to previous period it was much cheaper to immigrate to States, which was regarded as land of opportunities.

the correct answer is “opportunity cost”. opportunity cost is what a company misses out because it decided in one option over another one. in this case, the company decided to invest in building a factory so it gave up another possible benefit or profit in order to achieve success with the factory.  

trade-off is not the correct answer since it is a situation in which you accept losing something in return for benefits in other areas.

and finally, consequence is a general term used to accept what it comes when you make a decision. it can be a positive or negative consequence depending if the decision you took was the correct one.