Title: Guinea-Bissau.
Question: What per capita index does Guinea-Bissau rank as one of the lowest in the world?

Title: British Empire.
Question: When was the southern tip of Africa colonized?

Title: Modern history.
Question: What did the partitioning of the Otto Empire bring about?

Title: Anti-aircraft warfare.
Question:
When do some people believe that lasers can play a more prominent role in air defence?