it resulted in the destruction of the Japanese imperial army by the American navy, ushering in an era of American and British dominance over Japan

it resulted in the end of the Samurai feudal system

it was the first time gunpowder was used in a battle on the Japanese mainland

it was the first time rotating volleys of gunfire were used in a Japanese battle, to devastating effect

None of these answers is correct; the battle saw China repel a Japanese invasion of Manchuria