Who were the first people in the western hemisphere?

Is the saepta Julia in the forum romanum? How did Augustus come to power? What does the name callum mean and where does it come from? How many kids did ancient Romans usually have? Did seljuk Turks captured the city of constantinople in 1453 and made it the capital of their empire? How did european colonization expand slave trade? What is the difference between Oriental and Occidental? What is gained when a decision is made? Where did CAvelry get its name? What brought the second republic to an end? How many years have passed since 1620? Why was the wheel history's most important invention? What century is 1870 AD? Who led most of the Italian renassiance city-states? How would you say You are... in Middle Ages? What is Charlemagne famous for doing? Where does the last name shelton come from? What is the origin of the phrase of in the black? How is King Arthur remembered today? Which civilization invented movable type?