Answer:
The Monroe doctrine stated that the U.S. should use military force to prevent any form of intervention from an European power in the western hemisphere.
The Roosevelt corollary was different in that it allowed European powers to intervene as long as the intervention was considered justified, but not to invade.
This difference became clear during the Venezuelan crisis of 1902-1903, when Germany, Britain, and Italy imposed a naval blockade on Venezuela because the Venezuela president refused to pay for the damages suffered by European citizens during the recent civil war.
At first, Theodore Roosevelt allowed the blockade to continue because he believed that it was justified, but when Germany threatened to invade Venezuela, he intervened sending a fleet under Admiral George Dewey.
“At the end of O. Henry's story, the lawyers are puzzled at the sound of Gillian's laughter as he leaves. He has lied and told them that he lost the one thousand dollars so that Miss Hayden will... In "One Thousand Dollars" what is your first opinion about Gillian?”
On June 17, 1940, The defeated French signed an armistice and quit WW II, leaving Britain standing alone against Germany. In the Summer and fall of that year, German and British forces clashed in the skies over Britain in the first all-air battle in history.
A significant turning point in WW II, the Battle of Britain ended when Germany's Luftwaffe failed to gain air superiority over the Royal Air Force . Britain's decisive victory saved the country from a ground invasion from the enemy and proved air power alone could also be used to win a major battle.
The invention of the compass was an early piece of technology that helped explorers know where they were going when they were discovering new lands across the globe.
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