Which of the following phrases defines the term altitude? the height of a region in relation to sea level the ratio of the distance on a map from one place to another the key to understanding colors, shapes, and markings used in a map the arrow used to display the four directions on a map

How did the united states respond when north vietnam attacked a us warship and sent troops to south vietnam in the early 1960s? a.the united states declined to assist south vietnam against the north. b.us leaders authorized south vietnam to invade north vietnam. c.the president did not sign the gulf of tonkin resolution. d.congress authorized the president to escalate the conflict.