Begun when one side interfered in the administration of Holstein—for 10 points—name this 1866 conflict between Austria and Prussia.
It ended with two battles over the course of four days: the defeat of Hanover at Langensalza and the final Battle of Königgrätz, which led to the Peaces of Nikolsburg and Prague. Because of a secret [*] treaty with France, Italy entered this conflict so that Venice would change hands. Begun when one side interfered in the administration of Holstein—for 10 points—name this 1866 conflict between Austria and Prussia.
It ended with two battles over the course of four days: the defeat of Hanover at Langensalza and the final Battle of Königgrätz, which led to the Peaces of Nikolsburg and Prague.
Seven Weeks’ War [accept Austro-Prussian War on early buzz]