USA: Extermination of natives, slavery, company towns and child labor, Jim crow etc.

England: English colonialism from Drogheda to Amristar, plus the domestic Peterloo, child labor etc. Also, how many millions did England deliberately starve to death in the 1840s?

Germany: I can list off what the Krupp/Voegler/Thyssen financed Nazi party did for a while, then go back to before that