A. The Cenozoic era is the most modern geological era.
In the Middle Ages, a Yeoman was a type of social class that consisted of men who were attendants in noble households. They were also, in military contexts, a rank in the military, most specifically the third rank.
Answer:
what are you trying to say??
I'm pretty sure it would be B, because the tensions between most groups are mainly to do with religious differences, especially relating to the belief of how many gods exist.