What methods did the Incas use to unify their large empire? 3-5 medium lengthed sentences from a smart 6th grader- (note: i just need this to research, dont copy and paste you could be plagarized)

One way the Incas unified their empire was through a system of roads and bridges that connected different parts of the empire. This allowed for easier communication and transportation between different regions. Another method they used was a common language, Quechua, which helped facilitate communication among diverse groups of people. Additionally, the Incas established a system of tribute where conquered states would provide goods and labor to the Inca government, creating a sense of wealth and unity across the empire.