ANSWER:
The correct answer is trading routes, territory and natural resources.
Step-by-step explanation:
The conquering and absorption of the nomadic tribes by Xiongnu Empire brought to the empire more trading routes as the main aim of conquering the nomadic tribes was to gain control over the Silk Route.
The Xiongnu Empire basically controlled the eastern Steppes since 3rd century BC. The empire conquered several Eurasian tribes so that they could control trading routes and prevent the South Asian from grouping together and trading.