Why was Constantinople referred to as the crossroads of Europe

social contract theory, nearly as old as philosophy itself, is the view that persons' moral and/or political obligations are dependent upon a contract or agreement among them to form the society in which they live

the policy of appeasement influenced the beginning of ww2 because hitler gave the other countrys chocies but after they choose to try and appease hitler to not invade their country but he still invaded them.

mapmaking. cartography had been an art form for many years, but it wasn’t until the renaissance when ptolemy’s ancient system of latitude and longitude was rediscovered that mapmakers were able to make surprisingly accurate and useful maps.