Completing the Meiji Restoration that heralded the dawn of a new era for both Japan and Asia, the island nation found itself thrust into the modern world, a world of industry and conquest. Flexing its new muscles, the burgeoning power soon came to blows with the regional power that for centuries dominated the area politically and culturally: China. Also seeking to modernize in the wake of Western exploitation, China struggled to adapt to the changing times, doing everything it could to maintain a balance between modernity and tradition. Japan found that balance, and, its new industry desperate for raw materials, looked to the peninsula of Korea for new markets and resources. China, in contrast, refused to strike such a balance, adopting a veneer of modernity while maintaining the status quo, both domestically and with regards to Korea.

For decades Korea existed as a protectorate of China, paying homage to the mighty Chinese dynasties while minding its own business as best it could. However, sensing weakness in the former regional power after being defeated by the Europeans during the Second Opium War, escalating tensions over Korea between the old power of China and the new power of Japan led to the First Sino-Japanese War. In its first modern war, the modernized Japanese empire went to war against the dominant power in the region, and though interested Western powers favored China, Japan won the day, claiming Korea as their conquest and permanently upsetting the balance of power in the region. The conflict paved the way for the future Empire of Japan and the collapse of the Qing Dynasty.

Though both nations modernized, and China far outweighed Japan in terms of men and materiel potential, the island nation handily won its first modern war. The conflict resulted in Japan’s short-term gains in the wake of victory, and the long term disaster for both sides’ new roles in Asia, for with the end of Chinese dominance in East Asia came a new era for the region as a whole, an era whose consequences and horrors would not be fully realized for several more decades.

Though scarcely mentioned in the world of early 21st century politics, Manchuria represented a key region of Asia during the first half of the 20th century. Once the heartland of the fierce Manchu empire, this northeastern Chinese region's rich natural resources made it a prize for nations in the process of entering the modern age, and three ambitious nations in the midst of such a transformation lay close enough to Manchuria to attempt to claim it: Japan, Russia, and China. For countries attempting to shake off their feudal past and enter a dynamic era of industrialization, Manchuria's resources presented an irresistible lure. With immense natural resources coupled to economic activity more concentrated than elsewhere in China, this region, abutting Mongolia, Korea, the Yellow Sea, and the Great Wall “accounted for 90 percent of China’s oil, 70 percent of its iron, 55 percent of its gold, and 33 percent of its trade. If Shanghai remained China’s commercial center, by 1931 Manchuria had become its industrial center.” (Paine, 2012, 15).

Thus, it’s not altogether surprising that Japan's invasion of Manchuria in 1931 resulted from a long, complex chain of historical events stretching back to the late 19th century. Approximately 380,000 square miles in extent, or 1.4 times the size of the American state of Texas, Manchuria came into Imperial Russia's possession in 1900 due to the “Boxer Rebellion” in China.

In 1937, the Empire of Japan once more went to war with China, a nation broken into petty warlord fiefdoms and wracked by civil war. The most modern Asian nation enacted a brutal campaign over the fragmented realms that made up China, committing atrocities just as horrendous as their Axis ally in Europe. Despite this, the sheer size of China, coupled with Japan’s overextension, allowed the larger, less developed nation to endure.