How did Tokugawa Ieyasu contribute to Japanese history?

Born to a minor warlord in Okazaki, Japan, Tokugawa Ieyasu (1543-1616) began his military training with the Imagawa family. After Hideyoshi's death resulted in a power struggle among the daimyo, Ieyasu triumphed in the Battle of Sekigahara in 1600 and became shogun to Japan's imperial court in 1603.

Ithink it’s c , good luck on whatever : )