When did knowledge day begin?

What is the relevance of the year 1235 to the Julian calendar? What is the peace of augustburg? How did the northern region grow? Where did the last name walker come from? What two calendars are different from the western calendar? What is the longest day in the western hemisphere? What where the 3 main periods called in the Renaissance? Is the belief that technology drives historical change? How did traders move goods round the Empire? Did Charlemagne spread his empire to what is now far into modern Spain? One of Cather's greatest challenges lay in achieving a voice that could simultaneously conform to and also? What does the name Kuryn mean? In what ways did Greek culture develop differently from Italian culture after the division of the Roman Empire? What are the origins of the name 'Michael'? What is different about every human? What were the unintentional consequences of the crusades? What century was 1656 in? What is kowanite? What was the reward listed as in the medieval times wanted poster? What long east-west axis facilitate the spread of agriculture?