On this day 250 years ago in London, England, Benjamin Franklin received invitations to meet the next day with two prominent British supporters of America, David Barclay and John Fothergill. Barclay and Fothergill were acting as intermediaries for Lord Dartmouth and other British ministries, perhaps including Prime Minister Lord North, in a final effort to reach a peaceful resolution of American grievances before armed conflict broke out.

Source: https://founders.archives.gov/?q=%223%20December%201774%22&s=1111311111&sa=&r=1&sr=

Also on this same day in Boston, Royal Governor Thomas Gage received a letter from Lord Dartmouth in London circulating the King’s proclamation prohibiting the shipment of gunpowder and arms to America, and adding Dartmouth’s direction “to take the most effectual Measures for arresting, detaining and securing any gunpowder or any sort of arms or ammunition” that the Patriots had already obtained. The reaction in the Northern colonies to this proclamation would have the exact opposite of the intended effect and would put America and Britain another step closer to war.

Source: “The Battle for Legitimacy and Sovereignty in Revolutionary Massachusetts: 1774-1775 (Ohio State University Senior Honors Thesis, March 2010) at pp. 75-76 available at https://kb.osu.edu/server/api/core/bitstreams/e83e5161-9046-5b37-a566-11082f4e4103/content

And on that day in Maryland, the Baltimore Independent Cadets were formed.

https://usgenwebsites.org/MDBaltimoreCity/Military/Cadets.html