What is meant by the Pangaea

Pangaea was a supercontinent that existed during the Paleozoic and early Mesozoic eras. It assembled from earlier continental units approximately 335million years ago, and it began to break apart about 175 million years ago.

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.