The Congress of Vienna could've easily carved up Switzerland and shared it between France, the German Confederation and Italy.
If the Japanese had been more assertive they could have invaded Australia much more easily than actually occurred. Instead of wasting their time in the Pacific they would have been much better off just invading first the South-West corner of the continent followed up by invading the North-East corner and finally meeting each other near Broken Hill.
No, no and no.
I'm sorry, but I'm sick of people who think Japan could've easily invaded Australia.
Australia is literally impossible to invade. The Japanese knew this from doing the math and crunching the numbers. The manpower required for a operation of this undertaking would be more than the manpower used in the invasion of the entirety of Southeast Asia. They deemed any plan to land troops on the Australian continent infeasible, even plans as small as establishing outposts on the tips of the Australian continent, because they knew the Allies would just push them out again.
Have you looked at a map of the Pacific Ocean? Japan is six thousand kilometres away from Australia. This distance was going to make supplying an invasion of Australia a impossibility because the supply lines are going to be stretched to the limit. Tojo even said the following while on trial after the war.
"We never had enough troops to [invade Australia]. We had already far out-stretched our lines of communication. We did not have the armed strength or the supply facilities to mount such a terrific extension of our already over-strained and too thinly spread forces. We expected to occupy all New Guinea, to maintain Rabaul as a holding base, and to raid Northern Australia by air. But actual physical invasion—no, at no time"
The last reason why a invasion of Australia was not going to work is because of geography. For this reason, I proclaim Australia the Russia of the Pacific.
Unlike the rest of the Pacific region which hosts tropical environments, Australia is 90% desert, which is why most of the population hugs the coast. If the Japanese somehow make landfall in say, the Northern Territory or Queensland, the Australian military will simply retreat into the Outback. Desert warfare is a type of warfare the Japanese have absolutely no experience in, since their soldiers are used to fighting in New Guinea-style environments and even that took some getting used to.
The Japanese can try to seize the cities if they want, but they can't truly conquer the continent until they've conquered the Outback.
Like Tojo said, their real plan was to use New Guinea as a base to not only raid Northern Australia, but to blockade Australia from the rest of the world and force it to voluntarily surrender. Of course, with the United States Navy around, this was never going to happen either.
And let's just say Japan invaded Australia, even though I just stated the multiple reasons why it couldn't have. The Australian people were being prepared for total war ala the Soviet Union. They were being told to destroy everything of value to the enemy, from bicycles to boats. If the Japanese landed troops on the Australian continent, the people of the continent were not going to make it easy for them.