How did the pan African conference of 1900 show its opposition to imperialism

Answer: It sent a petition to Queen Victoria.

Explanation:

The delegates of the First Pan-African Conference requested Queen Victoria to check how Africans in South Africa and Rhodesia were treated unfairly by white people, particularly by the illegal compound system of work in Kimberley and Rhodesia, the indenture, the compulsory labor, the docket system, and diverse laws aimed to segregate Africans.

Victoria responded, and even though the inequalities in South Africa prevailed, the conference made them known to the entire world.

It sent a petition to Queen Victoria