Which Country is known as "country of copper" ?

Zambia is known as the 'country of copper' due to its vast copper reserves and mining industry. Copper is the backbone of Zambia's economy, accounting for over 70% of its export earnings. The country sits on the Central African Copperbelt, one of the world's richest metal deposits, and has been a major global copper producer since the 1930s. This nickname is well-established in geographical and economic contexts.