52answers 21, 22, 23, & 24 correct answers highly appreciate it

21. All of greece was in fear knowing that the army of the persian king Xerxes had begun it invasion of greece already the Thessalians had gone over tot he persian side their usal rivalries determing to stop the persian invasion. These cities agreed that sparta would lead the greek army as her repuatation in war was unmatched by any other greek state.

the correct answer is d

a conference committee is a group of congress representatives appointed by the senate and the house to reach an agreement over a bill that had different versions in each chamber. this is due to the fact that, to pass a law. both the house and the senate must agree on the exact same content and wording of the bill to present it to the president.