You're literally full of shit. The US and UK supplied most of Japan's war materials until 1940 when China's victory over the Japanese at Kunlun pass forced Japan to invade French Indochina to cut off Chinese oil imports for aircraft fuel.
Britain already complied with Japanese demands before 1940 to cut off Chjnese imports through British Burma.
The US embargoed Japan for invading French Indochina in 1940, not for invading China.https://desuarchive.org/his/thread/11960845/#q11965138
The US and Uk had absolutely no objection to Japan invading China until French Indochina fell and the American Philippines was threatened.>and the taking of Macau
Macau was rented to Portugal by the Ming dynasty in exchange for hundreds of taels of silver every year paid by Portugal to China. It wasn't conquered in a war. The Portuguese even had to bribe the Chinese provincial authorities in Guangdong to get then to anually rent out the island. Japan lost to the Portuguese and Nagasaki was colonized without rent or payment.
Portugal paid hundreds if silver taels every year from the 16th century to the18th century for Macau.>The Chinese defeated the Portuguese at the Battles of Shancaowan (Veniaga) in 1522 and Tunmen (Tamão) in 1521 and later at Shuangyu Island which is how Galeote Pereira got captured and arrested. Portugal had to rent Macau in 1557 from China by paying China hundreds of silver taels a year. Macau was never taken in battle from China by Portugal. They bribed provincial officials for the lease and paid rent for it until the 19th century when Britain fought the Opium wars in the 1840s and then Portugal decided to cancel paying rent. And Portuguese mercenaries were defeated by Cantonese pirates at the battle of Ningbo in 26 June 1857 (Ningpo massacre) even after they cancelled the rent for Macau.