The Boston Massacre affected the relationship of the colonists and Britain by tightening things between them. Even though the Soldiers won the court case against the families about the massacre, things became more hateful towards the soldiers.
The plague of Justinian plagues was a pandemic that afflicted the eastern Roman Empire especially its capital Constantinople the Sassanid empire and port cities around the entire Mediterranean Sea
How long it lasted was for 541 AD - 542 AD
The Nazi's were a group of people who wanted to feel like they are the best. People of disabilities were in the Nazi's way. Thus, they felt justified when murdering these innocent people. People with disabilities faced some of the common consequences as Jews or Gypsies. Hope this helped :)