What were Oda Nobunaga's accomplishments?

Oda Nobunaga was a prominent 16th-century Japanese daimyo known for his significant role in unifying Japan during the Sengoku period. His accomplishments include the innovative use of firearms in battle, notably at the Battle of Nagashino, which transformed military tactics in Japan. Nobunaga also implemented economic reforms and established a centralized government, laying the groundwork for the eventual unification of the country under his successors. His ambitious vision and ruthless strategies marked him as a key figure in Japanese history.