Answer:
B, C, and E.
Step-by-step explanation:
The age of imperialism began in the late-nineteenth century.
The term 'Imperialism' is derived from the Latin word which means 'supreme power'. As the meaning suggests, the age of imperialism began with the purpose to expand the territories to gain economical and political power. In the 1880s, Europe tried to gain control over the new lands in Africa and Asia.
The motif of these expansions was economical need. European states needed raw materials and cheap labours that were available in Africa and Asia. They also needed new markets to export their goods. The colonies in Africa and Asia were a good source of power over ports and also for refuelling naval vessels with goods, military supplies and soldiers.
So, the correct options are B, C, and E.