Jaime is writing a research paper on whether to revise the Immigration and Nationality Act of 1965. Which question is the best example of an effective research question?

The correct answer would be option D, How has the law affected immigrationin the United States. Jamie is writing a research paper on whether to revise the immigration and Nationality Act of 1965. The above mentioned questionwould be the best example of an effective research question.

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.