What conclusion can be drawn from these data about casualties in World War I? The Central Powers had more total casualties than the Allies.
Most of the casualties were prisoners or missing.
The Allies had a lower casualty rate than the Central Powers.
The number killed was greater than the number wounded

the american rail road was the most influential and useful transportation system developed in the 1800's with steam locomotives and in the very late 1800's and early 1900's diesel electric locomotives being used to transport goods and people around the newly expanded united states!

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.

some american cities felt workers were being oppressed by business monopolies

it increase by 12% a year from 1812-1820