The answers are "Massachusetts" and "April 19, 1775", so "- the battles of Lexington and Concord took place in the colony of Massachusetts on April 19, 1775".
The battles of Lexington and Concord were the first hostilities of the American Revolutionary War, marking the outbreak of the conflict. They took place in the Middlesex County, Massachusetts, in the localities of Lexington, Concord, Lincoln, Menotomy and Cambridge.
Sir William Blackstone 10 July 1723 – 14 February 1780 was an English jurist, judge and Tory politician of the eighteenth century. He is most noted for writing the Commentaries on the Laws of England.