The correct answer is - the Copper Belt.
Zambia is a sub-Saharan country in Africa, part of the Central African region. The country is located in area known as the Copper Belt, or more specifically, the Central African Copperbelt. The name of the area comes from the abundance of copper in it.
Zambia is a country that is well known for the big copper mines, and it is one of the leading countries in the world when it comes to copper mining. Unfortunately, the country is not manufacturing the copper, so most of the profit goes in the arms of the countries that buy it raw from Zambia and than manufacture it.