The answer is B
(_Please give this the Brainiest answer_)
Sharing the power makes it so all the power isn't all in one person's hands. It is also harder to corrupt the government because there are more than one people to corrupt.
Answer:
The institution of slavery
Stalemate developed along the Western Front because they tactics of offensive warfare had not developed while the technology of defensive warfare had. The invention of the machine gun, especially, had made it so that headlong charges of masses of soldiers were suicidal.