What would happen if checks and balances weren't added to the constitution

If there were no checks and balances, the government would be controlled by one group of people. For example, the legislative branch could take over the whole government, and no one can do anything about it.

operation overlord was the codename for the battle of normandy, the allied operation that launched the successful invasion of german-occupied western europe during world war ii. the operation was launched on 6 june 1944 with the normandy landings

to act quickly in times of danger to the united states

because you have to act quickly if you want to live/survive.