1. all were new inventions that explorers used to discover new trade routes except the:
a. compass.
b. square sail.
c. caravel
d. astrolabe.

Part a: which statement identifies the central idea of the text? a: the north was more powerful than the south and was always going to be the victor of the civil war. b: despite the obvious strength of the north, the outcome of the war was unpredictable at the time. c: the united states underestimated the strength of the south, giving it the upper hand. answer !