- Mar 6 1st Negro Mason in north America initiated, Boston
- Mar 17 Transylvania Land Company, headed by Richard Henderson, buys most of Kentucky through treaty signed with Cherokee chiefs at Sycamore Shoals on the Watauga River (later declared illegal)
- Mar 19 4 people buried by avalanche for 37 days, 3 survive (Italy)
- Mar 19 Poland & Prussia sign trade agreement
- Mar 22 British MP Edmund Burke makes a speech to the English Parliament advocating for peace with the American colonies
Give Me Liberty or Give Me Death
Mar 23 Patrick Henry proclaims "Give me liberty or give me death" in speech in favor of Virginian troops joining US Revolutionary war
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