Final answer:
Improved infrastructure and job opportunities were positive effects of imperialism on the colonies, though they primarily benefited the colonizing nations.
Step-by-step explanation:
A positive effect of imperialism on the colonies was the introduction of improved infrastructure, such as telegraph lines and water systems that helped protect city dwellers from diseases. Additionally, indigenous people who learned European values and customs were employed in colonial bureaucracies and police forces, providing them with job opportunities and education.
However, it is important to note that these changes often benefited the colonizing nations the most and sometimes led to the elimination of traditional jobs in the colonies.