What were two challenges that japan posed to world peace?

Answer 1

The war against Japan that spanned the Pacific Ocean dominated the Navy's attention and most directly shapes its development. It was, in fact, the war for which the Navy and the Marine Corps had been preparing over the previous decades. It was a conflict in which naval power, especially naval air power and amphibious assault operations, played the decisive role. In the vast expanses of the Pacific, the possession of strategic island bases and the actions of carrier task forces would shape the course of the war. The massed might of the Army and Army Air Forces would play important roles in the South and Southwest Pacific, where land masses were more closely spaced, but even there the Navy and Marine Corps could be the deciding factor. In the Central Pacific, however, the immense distances between isolated island chains meant that the only air power available to support attacking US Marines was that based on Navy carriers. Here, then, was where the Navy fought its war and where naval aviation played its most decisive role.

Pearl Harbor had left the Pacific Fleet crippled, stripped of most of its fighting capacity except for the three major carriers that had been out to sea when the Japanese planes dove from the clouds. By necessity, then, the Navy confined itself to a series of delaying and harassing actions launched from these vessels during the first days of the Pacific war as the Japanese advanced across the Pacific basin in a lighting offensive.

-Global security-