I need ideas for an essay please help!!! I already understand racial interrogations in Latin America and Mining, Plantation. I know that in Africa the gender roles of women increased due to the lack of men but I need more ideas. Note the time period given is 1492-1750
You can look at the damage caused by introduction of European diseases and flora and fauna, there's a stack load of research done on it so you won't be wanting for sources.
If you want something a little more exotic you can look at how introduction of European living styles into Africa and the negative outcomes around agriculture and disease resistance like malaria.