Inca civilization was structured as

A large empire with one ruler, is the right answer.

Explanation:

The Inca Empire was the most extensive empire in the pre-Columbian U.S. Its administrative and political construction is acknowledged by most historians to have been the most advanced in the Americas before the arrival of Columbus. The organisational, administrative and aggressive focus of the empire was found in the city of Cusco. However, the Inca civilization was structured as a large empire with one ruler.

    racial conflict and discrimination has existed ever since man learned to kill with rocks and bones. these conflicts arose from disputes between territory, power, wealth, religion, or simple difference. some of the most infamous racial disputes include slavery, the holocaust, and the civil rights movement.

    these listed disputes often resulted in casualties from all sides. riots, wars, imprisonment, and lynching are all commonly associated with racial conflict on severe levels.

      however, racism is an improving issue in recent decades. people are being more accepting and welcoming of diverse populations. though, the world isn't perfect and it will take much more time, if ever, until the world is rid of racism.