One can be gunpowder that was borrowed from China, which includes things like fireworks. Another can be numbers that were borrowed from Arabic and Hindu cultures, the basic system of 0-9. There were many more but these are quite common and have been around for a long time.
I'm not 100% sure but it could be: Voluntary Exchange takes place between buyers and sellers:
(btw I copied and pasted from the question so I didn't take any content :D)
Answer: the massacre of Jamestown colonists
Explanation:I just got it right on edj.
Christian crusaders drove muslims out of Spain by the 1000s king fernandan and queen Isabella unify spain