There are two reasons for this. One is that because of the way Manchuria was invaded, the United States put an embargo on oil trade and Japan understood that they wouldn't be able to fight at all without the oil so they needed to end the threat of the US. The US also controlled Philippines which were found in the Pacific and Japan needed that territory. It could be argued that because of US imperialism regarding the Philippines that Japan felt threatened.
It was different insofar that it was mostly between Japan and the US, other countries did not participate that much. Also, most of the fighting was done on the seas and in the air. There was almost no fighting in Continental China. They just kept fighting in the waters and jumped from island to island. In addition, beating Japan did not require an invasion since a blockade or bombing would be successful, while Germany had to be invaded all the way to Berlin.
https://www.monticello.org/site/jefferson/jefferson-and-declaration
America's declaration of independence from the British Empire was the nation's founding moment. But it was not inevitable. Until the spring of 1776, most colonists believed that the British Empire offered its citizens freedom and provided them protection and opportunity. The mother country purchased colonists' goods, defended them from Native American Indian and European aggressors, and extended British rights and liberty to colonists. In return, colonists traded primarily with Britain, obeyed British laws and customs, and pledged their loyalty to the British crown. For most of the eighteenth century, the relationship between Britain and her American colonies was mutually beneficial. Even as late as June 1775, Thomas Jefferson said that he would "rather be in dependence on Great Britain, properly limited, than on any nation upon earth, or than on no nation."
C) Refrigerated Rail Cars
Now cattle ranchers didnt have to do long cattle drives. They could slaughter the cows on site then just send the meat, still fresh, via the refrigerated rail cars.
1919 is the answer ldslah;lghlgjn/emn/