More importantly, Alexander's conquests spread Greek culture, also known as Hellenism, across his empire. In fact, Alexander's reign marked the beginning of a new era known as the Hellenistic Age because of the powerful influence that Greek culture had on other people.
Training for knighthood started at around 7 years of age. Only boys from noble families were allowed to become knights. Boys became squires at the age of 14, and were typically knighted at around 21 years of age.