The answer is <span>the Treaty of Portsmouth</span>
The Tang Dynasty ruled over a vast area that stretched from Korea to Northern Vietnam. It even reached west as far as Afghanistan. It took a very organized government to control all of this territory. The Tang established a detailed code of laws and administrative functions.
Answer:
The magnetic compass was an important advance in navigation because it allowed mariners to determine their direction even if clouds obscured their usual astronomical cues such as the North Star. It uses a magnetic needle that can turn freely so that it always points to the north pole of the Earth's magnetic field.
Explanation: