Which Southern African country, formerly known as South West Africa, gained independence in 1990 and is characterized by the Namib and Kalahari deserts, as well as a significant German colonial influence evident in its architecture and cuisine?

1. It's the driest country in Sub-Saharan Africa.
2. Its Fish River Canyon is the second largest canyon in the world.
3. It was administered by South Africa for many years prior to its independence.
4. It is known for its diverse wildlife, including desert-adapted elephants and black rhinos.