What are checks and balances that were built into the constitution?

Don’t mind the already marked answer but taking it now

What role did the alliance system play in preventing austria-hungary and serbia from coming to a compromise settlement?

Which of the following is true about a merger? a. it is an example of deregulation. c. it is a combination of two or more companies into a single firm. b. it violates the sherman anti-trust act of 1890. d. it always leads to economic growth.