What was
primarily responsible for the prosperity of the Islamic civilization?

Implementation of teaching of Islam.

Explanation:

Implementation of Islamic rules in the country is primarily responsible for the prosperity of the Islamic civilization because in Islamic civilization, the religious practices are followed which make the civilization unique and different from other civilization. Prosperity of Islamic civilization is only possible when all rules and laws present in Islam should be implemented and followed by its people.

(d) take jobs from american workers.

state law

most seat belt laws in the united states are left to the states. however, the first seat belt law was a federal law.