Why is it important to have more than one source when you are doing research?

What was the difference between marx view of communism and the actual implementation in russia? a. there was no difference between the marxist communism and russian communism. c. marxist view was not interested in the government controlling business while in russia, everything was controlled by the government b. marxist view was focused more on economic control while russia focused on taking complete controlled of everything. d. marxist view believed that the government controlled everything without questions while russia moved more towards a mixed economy.

Which empire was called "the sick man of europe? "

Thomas jefferson was not afraid to make daring statements in the declaration of independence. what evidence from the text best supports this conclusion?