At what age did zarathustra's religious upheaval begin?

Why did john browns raid impact the national issue of slavery?

Prior to the presence of europeans on the continent, the slave trade in africa a) did not exist in any form. b) was limited to internal trade only. c) included the trans-saharan and indian ocean slave trade. d) was rarely needed due to the lack of an agricultural economy.

Which of the following best describes how the maya civilization was governed