Oda Nobunaga defeated the forces of Imagawa Yoshimoto at the Battle of Okehazama in 1560, marking a major turning point in the unification of Japan during the Sengoku period of the 16th century. This victory by Nobunaga allowed him to gain control over most of Owari and Mino Provinces. In just 3 sentences, the document discusses a key battle during 16th century Japan in which Oda Nobunaga defeated Imagawa Yoshimoto, giving Nobunaga control of new territories.