Which African landlocked country is home to the ancient city of Great Zimbabwe?

Which of the following European landlocked countries is also a member of NATO? Which African landlocked country is home to the ancient city of Axum? Which of the following landlocked countries in South America has a coastline on Lake Titicaca? Which landlocked country in South America has the highest population? Which of the following landlocked countries in Asia has the largest land area? Which African landlocked country is completely surrounded by South Africa? Which landlocked country in Asia shares the longest border with India? What is the smallest landlocked country in the world?