Which of the following resulted from the mongol conquest of russia?

What do historians call the political,social,or cultural circumstances surrounding an event?

Which of the following led to a continuation of the treatment in the excerpt above? a)the brutality of the trans-atlantic african slave trade. b)spanish repression after violent native uprisings in new spain during the 16th century. c)european competition to quickly establish colonial holdings in the new world. d)the reliance of the spanish on native americans to provide labor under the encomienda system.

What would be considered a secondary source about the assasination of abraham lincoln