What factors after 1939 led to u. s. involvement in world war ii?

Which of the following is made possible by the expression of different points of view in government? a : authoritarianism b : like-mindedness c : better funding d: compromise

Marine exptoration of oil uses seismic waves to locate oil in the seabed. what is a negative impact from seismic waves on the aquatic ecosystem of the ocean? a.seismic waves kill microoganisms b.seismic waves disrupts the sand and causes seafloor erosion c.seismic waves have virtually no adverse affects on marine life d.seismic waves damage the sonar that dolphins and whales use to orient themselves underwater

How have changes in transportation affected washington, d.c.