Which are correct definitions for history? choose all answers that are correct. a. a documented narrative of change over time b. the study of human behavior before records were kept c. the study of how people have used their environment d. the study of the human past

Which statement best describes a significant cause of world war ii? o a. the economic boom that followed world war i allowed countries to build up huge militaries. o b. the treaty of versailles, which ended world war i, left lasting resentments in many countries. o c. the rise of imperial states in asia caused european powers to unite for their common defense. o d. the league of nations encouraged european states to form secret military alliances.