Question

Imperialist nations in the 1800s believed that having many colonies
served a purely economic purpose.
was more expensive than it was worth.
demonstrated their superior power.
hindered their military forces.

Answer 1

demonstrated their superior power.

Imperialism in the 1800s was driven by nationalism and the desire for prestige — colonies were seen as proof of a nation's strength and global influence (though economic motives and strategic/military uses also played a role).