Why might one study world history by entire eras rather than by separate dates and events?

Which of the following was true of american workers during the harding administration? a.) few joined unions because there were no unions to join. b.) many joined unions because of fordism. c.) few joined unions because the economy was strong. d.) many joined unions because of unfair labor laws.

The development of humans was directly dependent ondevelopment of a language.development of communication between people.e development of tools.litdevelopment of the wheel.

Apurging of emotions, specially pity and fear