What did Ralph Waldo Emerson mean by the phrase "the shot heard round the world'?
A: The fighting at Concord inspired many other struggles for freedom.
b: At, Concord, British soldiers used the most powerful weapons known at the time.
C: The war might not have broken out if a single soldier had not disobeyed orders.
D; News of the fighting at concord spread quickly across the Atlantic Ocean.

Agreat cause of former hostility was caused when the invasion of north europe was invaded by germany and when the devestation of pearl harbor have occurred during world war ii followed by the axis powers; because of the damage created by the axis powers, both nations in europe and the united states grew hostile and grew further alliances with more  nations in europe to work along side together to oppose the axis powers.