What grievances might a person under European colonial rule have
against European imperialism?

Labour on European-owned plantations, mines, construction projects, and homes. People might take part due to the need for money, loss of land adequate to support their families, or sometimes by the orders of colonial authorities. They were subject to exploitation, and migrated to many parts of the world.

Explanation:

b) race riots in several cities

the correct answer is

d) rocket launcher