Chine, China, and Peru are the top three largest copper producing countries.
Since Roman was expanding and it didn't have control of their lands and couldn't govern most of it. It kept expanding until the western part of Roman was conquered by Barbarians.
The Ottoman Empire was founded by Osman 1 (the first).
As president Andrew Jackson sent them away, leading to the trail of tears to gain the land. they were better off in Indian territory because the land was then his to control.
Andrew Johnson
I hope this helps!