The Belgian Empire

Most populous city that was once a part of the Belgian Empire

Tree product that was the main cash crop of the Congo Free State

Modern-day African countries that Belgium annexed from Germany after their
victory over them after the World War I

Capital of the Belgian colonial territory that consisted of those two countries

Countries that had colonies with the name "Congo" in them

Novel by Joseph Conrad about a river boat captain meeting an ivory trader

City in the Congo that was known by the name "Élisabethville" during the colonial period

Latin American country where a Belgian company had bought a most of

Small village that served as the first capital of the Congo Free State
(hint: girl's name with a repeating sound starting with V)