I honestly think that the Convention of Kanagawa in 1854 set things in motion, as before that point in time, Japan had been in a self-imposed isolation. When Commodore Perry showed with weaponry that outpaced theirs by a century, they obviously had no choice but to open back up. However, they still wanted to retain that age of isolation, and that is ultimately why they began the first Sino-Japanese war in 1894 along with the second in 1937 & subsequently invaded Manchuria.
To me it all started in 1854, and the conflicts after that just rolled up more and more mass until people began noticing it. We never consider it the beginning simply because the battles are just assigned to different wars.
To me it all started in 1854, and the conflicts after that just rolled up more and more mass until people began noticing it. We never consider it the beginning simply because the battles are just assigned to different wars.