Fearing for her life, Martha, at the urging of relatives, decided to free her deceased husbandâs slaves immediately. On January 1, 1801, a bit more than a year after Georgeâs death, Washingtonâs slaves gained their liberty.
The Hundred Years' War was a time of rapid military evolution. Weapons, tactics, army structure and the social meaning of war all changed, partly in response to the war's costs, partly through advancement in technology and partly through lessons that warfare taught.efore the Hundred Years' War, heavy cavalry (knights) was considered the most powerful unit in an army, but by the war's end, this belief had shifted. The heavy horse was increasingly negated by the use of the longbow (and, later, another long-distance weapon: firearms).
Thirty Years' War: Thirty Yearsâ War, (1618â48), in European history, a series of wars fought by various nations for various reasons, including religious, dynastic, territorial, and commercial rivalries. Its destructive campaigns and battles occurred over most of Europe, and, when it ended with the Treaty of Westphalia in 1648, the map of Europe had been irrevocably changed.