I'm not sure but I think it's coal mining
Answer;
D. It helped spread the religion into Europe
Explanation;
The most important impact of their diaspora's was that they were able to spread faster throughout Europe, compared to other religions or even any diseases. Because many Jews fled to Europe and fled to all the different parts of Europe, more and more people were infected with the idea that this religion was right for them and the only true one
"<span>Native American slaves were replaced by African slaves because of treaties signed between the Europeans and the Native Americans" is the best choice but the Natives also knew the land too well and often escaped. </span>
