It would be B) European Migration
hope you like my answer :)
It was the Louisiana purchase.
1: fall of France
2: Japanese attack on pearl harbor
3: Italy
4: Winston Churchill<span />
Living in the city is dangerous because there are dangerous people in the city, and it is very poluted, but in the country, it is more remote and less poluted then the city, hope this helps
I could impact it because Lincoln really helped the slaves escape hope it help
