A huge part of the reason sovereign nations built navies was to fight piracy. It’s not really true that waters were open historically.
The framing in general of “Japan only took military action and the US sank to attacking civilians” is wrong too. Take a look at what Japan did to the Chinese during that time period if you think they were only attacking military targets.
Japan also invaded an Alaskan island. https://prologue.blogs.archives.gov/2010/06/07/the-japanese-...
> Are you saying USA cared about the Chinese?
I’m saying it was not beneath Japan to commit horrific atrocities on civilians. You can’t pretend they were some high moral actor that was only performing a military action to defend themselves.
World war 2 was the war of 3 different evil ideologies, you had the fascists vs the communists vs the imperialist England and France. The war ended with both the Imperialists and the Fascists defeated so European imperialism ended there, England and France had to give up their colonies.
If not for USA likely Europe would still have colonies and just be as imperialist as they used to be, same with Japan. USA might not be as good as these defeated imperialists, but it was still USA that ended the age of European imperialism that was so much worse than anything USA has done since ww2.
(I'm a European)
“The American navy closed international waters.” Not in the Pearl Harbor context. Before Pearl Harbor the U.S. was not conducting a naval blockade of Japan that closed international waters. The U.S. cut off Japan from US oil in July 1941. That is not the same thing as the U.S. Navy closing the Pacific.
“The USA blockade was the reason Japan attacked Pearl Harbor.” False. Japan attacked Pearl Harbor because it wanted to neutralize the U.S. Pacific Fleet while Japan seized the "Southern Resource Area”, especially oil-rich East Indies, Malaya and other regions in the pacific. The U.S. oil embargo might have played a small factor, but that wasn't a US-only thing; various countries were increasingly unwilling to sell oil and other resources to Nazi-aligned Japan while they were attempting to conquer China and most of the Southeast Pacific.
The United States formed our Navy because of Islamic Pirate/Slavers causing a lack of open waters.
https://en.wikipedia.org/wiki/Barbary_corsairs
"The Barbary threat led directly to the United States founding the United States Navy in March 1794."