Why was medicine so ineffective in the middle ages?

What was a major cause of world war i?

According to robert kennedy, how might the historian see 1962a. as a year of resistance by the southb. as a year of great progress in civil rightsc. as a year of rioting and violenced. as a year of resegregation

The three estates social system in france ensured balanced representation of all people and treated each social group fairly. true or false ? why?