White people destroyed & enslaved most of the world but Spread christianity to save souls,SHould we thank them?

You shouldn't blame them for slavery because when the Europeans occupied the west coast of Africa, they inadvertently marginalized the tribes there. The rivaling tribes were pushed closer together, and they fought and proceeded to enslave their own kind and started selling these POWs as slaves to the white man. You CAN, however, blame the white man for spreading the word of ignorance.