How did the russo-japanese war of 1904 affect japans attempt to extend its imperialism?

Good combat experience gained in fighting the Russians. That combat experience would be applied in later wars.

a woodchuck would chuck 12.5 wood : 3

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.