What are the best 1980's events to do a research project on, and focus questions relevant to it?

The Chernobyl nuclear meltdown, the challengers explosion and the questions: what could have caused the nuclear meltdown?, what impact did the nuclear meltdown have on the world, what adaptive changes were made to rockets to prevent further explosions, how did the challenger’s demise delay further missions to space.

it would be that mali has the worst literacy rate than the others

to protest slavery i would think it would be a