I think a or d but in hot 100 percent sure
c. Europeans believed that spreading their culture throughout the world would elevate savage societies.
Europeans justified colonialism by claiming that it was their responsibility to civilize savage societies. This was based on the belief that they were a superior race with the responsibility to civilize native primitives
Answer:
The revolution was provoked by Russian military failures during the First World War, as well as public dissatisfaction with the way the country was run on the home front. The economic challenges faced due to fighting a total war also contributed