What was the main use for airplanes in World War I? O Airplanes enabled soldiers to observe troop movements and locations.
Airplanes allowed for the quick movement of resources.
O Airplanes eliminated the need for soldiers in the trenches.
Airplanes decreased the significance of naval warfare.

President nixon resigned from office in 1974 after he was informed that the senate would impeach him, as allowed in the constitution, for his actions in the watergate scandal. one of the key reasons that nixon’s actions became public was a) the freedom of press guaranteed by the first amendment. b) the right to confront witnesses as guaranteed by the sixth amendment. c) the limitation of judicial powers as defined in article 3 of the constitution. d) the prohibition against illegal search and seizure as guaranteed by the fourth amendment.

President franklin d. roosevelt was born in 1882 in new york. which number on the map represents the state of new york?

What important discovery was made by edmond halley and alexis clairaut, using newton's ideas of mathematics and gravity? they created the scientific method to outline how science should be conducted. they were able to find the orbit of a comet and predict the year of its return. they discovered the three newest planets--uranus, neptune, and pluto. they explained why objects appear to have color.