Now called Namibia, it was once called South West Africa. The capital is Windhoek; it is also the largest city in the country.
The Atlantic
Yes, Egypt is part of South Africa.
That depends on what country in "west africa" you are talking about. South Africa is a country, where as west Africa could be defined as anything on the western coast of the continent.
Zimbabwe is a neighbouring country to South africa the southernmost country on the african continentthus it is in Southern Africa