The bottom of geothermal sources is abundant in black-colored ores (sulfites) of iron, copper, zinc, nickel and other metals called "black smokers". Iron ores are rocks from which metallic iron can be obtained. Metals, originally disseminated on magma-laden or rocky paths, are concentrated in fluids and can be redeposited if they encounter favorable temperatures and pressure conditions, forming mineral veins.
The Answer Would Be "A" .
Slavery was prohibited. It also provided the first national limitation upon the expansion of slavery. This was how slavery was mentioned in the Northwest Ordinance.Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
