How many americans served on the front by the end of the war, and how many died?

The correct answer is:

1.3 million served and 50,000 died.

American losses in World War I were modest in contrast to those of other belligerents. The United States lost further soldiers to disease (63,114) than to actual warfare (53,402).  The influenza epidemic of 1918 was key to this situation. Furthermore, earlier in the war European doctors had obtained knowledge that helped Americans decrease deaths from chemical weapons, shell shock, and infected gunshot and shrapnel wounds.

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.

a.

congress passed laws allowing for free passage between states.