: <span>Only about 2.8 million were drafted under the Selective Service System
All males aged 21 to 30 were required to register for military service for a service period of 12 months. As of mid-November 1917, all registrants were placed in one of five new classifications. Men in Class I were the first to be drafte and men in lower classifications were deferred. Dependency deferments for registrants who were fathers or husbands were especially widespread.[9] The age limit was later raised in August 1918 to a maximum age of 45. The military draft was discontinued in 1920
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C. Peddlers who traveled as a group to the same area to sell merchandise together rather than compete with each other. hope this helps
New technologies were invented
Many people moved to the cities.
There were fewer farmers
D. Castiglione
Cesare Borgia was the Son of the Pope and Cosimo de Medici's family ruled Florence, so neither have anything to do with the royal family of Mantua. Machiavelli wrote the Prince, so that is not the correct answer either. Castiglione was part of the Royal family of Mantua and did write the Book of the Courtier. So D is the correct answer.
