Why did the U. S. lose the vietnam war

Will mark brainliest to quickest answer which of the following is true about interest groups? a. always support one candidate b. not involved in elections c. may pass new laws d. ineffective in the states

The system of checks and balances ensures that

Profits are maximized when marginal revenue and marginal costs are a. set c. equal b. less than market price d. greater than market price