In the united states, congress a. forbade the use of u. s. ground forces in cambodia and laos b. authorized covert south vietnamese attacks on north vietnam c. supported the invasion of laos as a deterrent to communism. d. gave president nixon the power to expand the war into cambodia.

In the United States, Congress gave President Nixon the power to expand the war into Cambodia. The correct option among all the options that are given in the question is the fourth option or the last option or option "D". I hope that this is the answer that has actually come to your desired help

It can provide a social code to protect each citizen's future economical earnings. and then obviously defending the country from invading countries.