Answer:
through the draft authorized by the Selective Service Act of 1917.
Explanation:
Although its constitutionality was unclear at the time of its enactment, the Supreme Court upheld its constitutionality the next year, in 1918. I hope this helped.
Cyrus' first great achievement was his conquest of Ecbatana, the Median capital ruled by Assuages. This event is first mentioned in two contemporary Babylonian sources: the Nabonidus Cylinder of Sippar and the Nabonidus Chronicle.
The name of the case was Plessy vs. Ferguson. Hope this helps :)