Which of the following is true about serfs? Serfs were technically free, but were tied to the land they were born on. Serfs were allowed to travel with their lord's permission Serfs could travel freely from town to town Serfs were allowed to sell the land they farmed

Match each person with his contribution. aristotle socrates eratosthenes hippocrates he studied the causes of illnesses in search of cures. he created a teaching method that involved asking questions. he determined that earth was round. he educated alexander the great.