<span>since it is asking for the US foreign policy disaster that occurred you can get rid of the options that the US had nothing to do with.</span>
Not to use poisonous gases for that was an inhumane way to die, cause who wants their lungs melted while still inside their body
"<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>
