What were the two parts of the Richard Nixon’s agreement to the 1973 ceasefire?

Why was the battle of stalingrad a turning point in the european war

What thematic reasons does the book list for european expansion

Historians use periodization in order to: a. decide when a certain historical even took place. b. divide history into units with distinct start and end dates. c. criticize arguments made about the past. d. organize history into different timelines