The French and the Native Americans exchanged products, which was painful for the two gatherings. The Frenc took in numerous valuable fundamental abilities from the Native Americans. They figured out how to manufacture kayaks and make snowshoes, and the Native Americans enlightened them regarding the Mississippi River.
https://toistudent.timesofindia.indiatimes.com/news/culture/why-was-genghis-khan-feared/11255.html theres a good article on your question
To my knowledge, the correct answer among all of the given choices is C.) Steam. If I'm not mistaken, this was the time that more trains came into use.
I hope this is the answer you were looking for and that it helps!! :)
