Which Amendment gave 18 year olds the right to vote?

26th amendment

Explanation:

Congress had stated that the voting age should be lowered and since they feared that people would get confused, they passed out the 26th amendment.

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.