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.
Answer:
I'm thinking that's true, i'm sorry if i'm wrong!
Native Americans' population declined because of infighting within the tribes, because of wars with the colonists but mostly because of the new diseases brought to their land by the colonists that their body was not use to and that their immune system could not fight off. -- Also because of population resulting in spreading of diseases -equals more death due to undeveloped medical tech
Northern Africa, because, well do I really need to explain myself?
The policy that government should interfere as little as possible, and have free businesses
