Japan's unique Electronics Factory ramps up production even more. Hojo incurs a +50% Production for Encampments, Holy Sites, and Theater squares. Furthermore, Japan's specialty unit, Samurai, don't suffer combat penalties upon losing health.
Japan's military receives bonuses for land units adjacent to water tiles and naval units in shallow water. Hojo Tokimune (Japan) is currently considered the strongest and most well-rounded civ in the game.
The creme de la crop of civ leaders, their prowess in domination allows them to seize other victories just as effortlessly.