Which scenario is an accurate example of how branches of the federal government can check each other‘s powers.

a- the supreme court rules an executive order unconstitutional so the president replaces some of the justices on the court.

b- The president vetoes a law passed by Congress but Congress override the veto with a 2/3 majority vote.

c- The president nominates a new judge to fill a federal court vacancy but the Supreme Court vetoes the candidate because of his inexperience

d-The Senate refuses to approve the presidents federal court nominees so the Supreme Court impeaches several senators.

this isn't a question and if you're going to list things be kind and use commas.

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

explanation: