"<span>C.Under free enterprise, merchants were able to
conduct unrestricted international trade. Under mercantilism,
international trade was restricted" is the best option, but there were other differences as well. </span>
1) The word "vassal" was mostly used for the knights who were responsible for providing the military defense for the king - the answer is "perform military service"
2) Magna Carta is known as the first document to limit the power of the king ! (3rd option)
3) this was the Holy Roman Empire, which was actually an association of independent states.
Investment promotes economic growth by adding money into the economy which is then spent on goods and services to provide the good or service being invested in. Furthermore the product or service being invested in then gets sold generating revenue.
please let me know if you got it right! Have a great day:)