Windows 10 is the latest iteration of Microsoft's operating system. Desktops with Win 10 and previous versions are what most people typically use, so you'll be assured of the best compatibility and widest selection of third-party software. This also applies to browser plugins, since some only work with Windows. Apple's OS X is currently up to version 10.11 (El Capitan).
World War II (WWII), also called the Second World War, was a global war. It took place from 1939â1945. Most of the world's countries, including all the great powers, fought as part of two military alliances: the Allies and the Axis. The war was fought as a total war, meaning all resources a country had were used in the war, even those that didn't belong to the army, such as factories.
After surveying the U.S. mobilization and financing for the war, Rockoff concludes that perhaps the greatest impact of World War I was a shift in the landscape of ideas about economics and about the proper role of government in economic activities. When the war began, the U.S. economy was in recession. But a 44-month economic boom ensued from 1914 to 1918, first as Europeans began purchasing U.S. goods for the war and later as the United States itself joined the battle.