The Zulu (Zulu: amaZulu) are the largest South African ethnic group, with an estimated 10–11 million people living mainly in the province of KwaZulu-Natal. Small numbers also live in Zimbabwe, Zambia, Tanzania and Mozambique. Their language, Zulu, is a Bantu language; more specifically, part of the Nguni subgroup. The Zulu Kingdom played a major role in South African history during the 19th and 20th centuries. Under apartheid, Zulu people were classed as third-class citizens and suffered from state-sanctioned discrimination. They remain today the most numerous ethnic group in South Africa, and now have equal rights along with all other citizens.