Why is division of power in government necessary?

The 18th amendment banned the selling of alcohol and contributed to organized crime. true or false

What was one of the accomplishments of the space shuttle that what was one of the accomplishments the space shuttle that facilitated communication and entertainment ?

Ineed asap! ! what is the name of the system in which each branch of the u.s government can limit the actions of the other branches? a. perpetual union b. division of powers c. cooperative federalism d. checks and balances