Which country is known as the country of copper?

Zambia

Zambia, in southern Africa, is sometimes known as the "country of copper" because of its extensive export of copper ore.

Copper Country

This is not a country, but an area in the Upper Peninsula of Michigan in the US, including Keweenaw, Houghton, Baraga and Ontonagon counties. In the 19th century, the area's copper mines, including those near Copper City, were among the largest in the world.

Land of Copper

Cyprus is sometimes known as the Land of Copper, for its ancient mines. The term aes Cyprium may be the basis for the element's Latin name.