1.Charlemagne crowned Holy Roman emperor, 800 CE
2.Chinese issue the first paper money, 1024 CE
3.The wheel is used in Mesopotamia, 3500 BCE
<u><em>4. Year 1 CE</em></u>
Answer:
In the Revolutionary War, slave owners often let their slaves enlist in the war with promises of freedom, but many were put back into slavery after the conclusion of the war. At the battles of Lexington and Concord, African Americans responded to the call and fought with Patriot forces.
