What piece if data clearly indicated thag there was no longer a western frontier?​

i would say your answer is a)

sorry if im wrong

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.

try c, it's always the answer. pats suck.