Following the Bolshevik Revolution, Lenin a. put a socialist system in place
b. entered World War I on the side of the Central Powers
c. held free, open, and democratic elections
d. restored the Romanov monarchy

1. what was william harvey's discovery about the human body? @ two types of blood flowed through the veins and arteries. b four fluids existed in the body: blood, yellow bile, black bile, and phlegm. © the same blood flowed through the veins and arteries. d ancient ideas of human anatomy and bodily functions were wrong. done