President:
Pres: (Articles of Confederation) Elias Boudinot
Pres: (Articles of Confederation) Thomas Mifflin
General
- Abolition: Slave James Derham buys freedom, eventually setting up medical practice in New Orleans
- Americana: End of Revolutionary War - Independence with Treaty of Paris
- Land: Treaty of Paris between Britain and US gives US territory to the Mississippi River
- Military: Society of the Cincinnati – elite American revolutionary group founded
- Politics: Spain, Sweden and Denmark recognize American independence
East
- General: Second Pennamite War between Connecticut and Pennsylvania until 1788
- Delaware: Illness of the "bilious disorder" of the liver, possibly parasites, hepatitis, or malaria outbreak
- Maryland: Blacks disenfranchised
- Massachusetts: Slavery abolished with the Quok Walker case