Context: The first Europeans to disembark and explore the region were the Portuguese navigators Diogo Cão in 1485 and Bartolomeu Dias in 1486; still the region was not claimed by the Portuguese crown. However, like most of Sub-Saharan Africa, Namibia was not extensively explored by Europeans until the 19th century, when traders and settlers arrived, principally from Germany and Sweden. In the late 19th century Dorsland trekkers crossed the area on their way from the Transvaal to Angola. Some of them settled in Namibia instead of continuing their journey.

Question: When did Bartolomeu Dias explore Namibia? 
Answer: 1486

Question: What nationality were the first navigators to explore Namibia come from? 
Answer: Portuguese

Question: When did Diogo Cao explore Namibia?
Answer: 1485

Question: Along with Swedish settlers, what other country's settlers inhabited in Namibia first?
Answer: Germany

Question: Settlers on their way to Angola settled in Namibia instead of going where?
Answer: Angola

Question: In what year was Diogo Cao born?
Answer: Unanswerable

Question: In what year was Bartolmeu Dias born?
Answer: Unanswerable

Question: What nationality were the Dorsland trekkers?
Answer: Unanswerable

Question: Which country was the first to have European traders in Sub-Saharan Africa?
Answer: Unanswerable

Question: What was the first country to have European settlers in Sub-Saharan Africa?
Answer: Unanswerable