A would be correct. The US employed “island hopping” or “leapfrogging” tactics as a way to quickly move across the Pacific toward Japan. A small landing force could decimate a Japanese stronghold and replace it with an American base from which another landing force would launch. It cut back on cost and time, since a fleet wouldn’t have to return to a base thousands of miles away to refuel and regroup any longer.
The two reasons:
- Britain intercepted the Zimmerman Telegram
- Germany resumed unrestricted submarine warfare
Context/detail:
Public outrage in the US against the Germans swept the nation following the sinking of the British ocean liner, <em>Lusitania</em> -- but that happened before 1917. When a German U-boat (submarine) sank the Lusitania in May, 1915, over 1,000 persons were killed, including more than 100 Americans. The passenger liner was targeted by the Germans because they suspected weapons were being shipped to Britain in the cargo hold of the ship.
Germany managed to stave off American entry into the war at the time by pledging to stop submarine attacks. But a couple years later they resumed such attacks, and there was also an intercepted telegram (the "Zimmerman Telegram") that showed Germany was trying to secure Mexico as an ally against the United States.
In 1917, the US declared war on Germany in response.
C. wanted to establish a French Republic.
The radicals in France wanted to overthrow the monarchy and establish a republic form of government to mimic that of the United States.
Moderates believed a republic was too far of a leap for a country with the tradition of monarchy. They wanted to create a parliamentary system like Great Britain that would maintain a monarchy and have representation. Conservatives wanted to maintain the monarchy and as a result were often the target of the radical government. Robespierre and the Jacobins launched a government meant to be a republic which turned into a dictatorship filled with bloodshed at the blade of the guillotine.