Ivan III the Great vs Tokugawa Ieyasu

Ivan III married Sophia (Zoe) Palaiologina, niece of the last Byzantine emperor. This marriage allowed Ivan to claim succession to the Byzantine Empire, adopt the double-headed eagle as a symbol, and promote Moscow as the Third Rome.

Ivan III conquered the Novgorod Republic after a series of campaigns. He abolished the veche (assembly) and removed the veche bell, incorporating Novgorod's vast territories into the Grand Principality of Moscow.

Ivan III faced the Mongol army of Khan Akhmat across the Ugra River. After weeks of stalemate, the Mongols withdrew without battle. This event ended 240 years of Mongol suzerainty over Russia.

Ivan III promulgated a new legal code, the Sudebnik, which standardized laws across the Russian lands. It restricted peasant mobility by limiting the time for transfer between landowners, a step toward serfdom.

Ivan III launched a war against Lithuania, capturing the cities of Bryansk, Dorogobuzh, and Putivl. The war ended with the Truce of 1503, which ceded significant territories to Moscow.

Tokugawa Ieyasu led the Eastern Army to victory over Ishida Mitsunari's Western Army at Sekigahara. This decisive battle ended the Sengoku period and established Ieyasu as the supreme military ruler of Japan, paving the way for the Tokugawa shogunate.

Emperor Go-Yozei appointed Tokugawa Ieyasu as shogun, officially beginning the Tokugawa shogunate. Ieyasu established his government in Edo (modern Tokyo), centralizing military and political power under his family's control.

Tokugawa Ieyasu besieged Osaka Castle, the stronghold of Toyotomi Hideyori. The castle fell, and Hideyori committed suicide. This campaign eliminated the last major opposition to Tokugawa rule, solidifying the shogunate's control over Japan.

Ieyasu issued the Laws for the Military Houses, a code regulating the conduct of daimyo. It restricted castle construction, required alternate attendance in Edo, and prohibited alliances without shogunal permission. This law helped control the feudal lords.

In his final years, Ieyasu began policies that led to Japan's isolation. He restricted foreign trade to specific ports and expelled Christian missionaries. These measures, expanded by successors, resulted in the sakoku policy that isolated Japan for over 200 years.