What was the geographic advantage of the battle of Thermopylae

Thermopylae was an excellent choice for defence with mountains running down into the sea leaving only a narrow pass along the coast

Explanation:

It was an excellent choice of defense because the mountains ran down the seas which left way for only a narrow pass near the coast.

Explanation:

See answer. Explanation included in answer above

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.