So i am doing a history thingy, can someone lend me some suggestions? and sources? i would appreciate it greatly, here is the prompt.

by the early 1990s, soviet domination in eastern europe had ended. a number of individuals played a part in the collapse of the soviet union. understanding the role that each played is an important part of understanding the process that changed european politics and geography.
using the information from the reading and from your online research, decide who you think should be named “person of the decade.” then write a letter to the time magazine nominating committee explaining why they should select your choice for “person of the decade.”
• provide background on the person.
• give details about the person’s work.
• explain the person’s impact on others and describe how the person changed the course of culture and politics