Final answer:
Travel conditions throughout much of inland China were difficult due to extreme conditions, challenging terrain, and the presence of warring tribes and bandits.
Step-by-step explanation:
The statement that best describes travel conditions throughout much of inland China is: Extreme conditions made it hard to establish routes connecting various regions.
China's diverse geography, climate, and terrain presented challenges for travelers. The country's long-distance roads were often of poor quality, unpaved, and maintained by local authorities.
Additionally, the presence of mountains, deserts, and other extreme conditions, along with the threat of warring tribes and roving bandits, made it difficult to establish safe routes for travel between different regions of inland China.