What two factors made the Tang capital of Chang’an a center of culture and trade

1. Strategic location: Chang'an was strategically located at the eastern terminus of the Silk Road, which connected China with Central Asia, the Middle East, and Europe. This made it a major hub for trade and cultural exchange, bringing in a diverse range of goods, ideas, and people from different parts of the world.

2. Political stability and economic prosperity: The Tang Dynasty was known for its political stability and economic prosperity, which allowed Chang'an to flourish as a center of culture and trade. The Tang emperors promoted commerce and foreign relations, attracting merchants, scholars, and travelers to the city. This, in turn, led to the development of a vibrant cultural scene, with a thriving market, thriving arts, and a cosmopolitan atmosphere.