Rock'n Roll music , that became popular with american teenagers in the 1950 grew out of the sounds of what other form of music? A. Jazz, B. swing C. Rythm and blues, D. Ragtime

some american cities felt workers were being oppressed by business monopolies

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.