Identify one example of cross cultural interaction done. 600 BC to 1450 CE

i used to know but i learned it a long time ago sorry

explanation:

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.