How do domestic activities, government policy, trade, and international relations interact to form modern China’s economy?

Manufacturing, agriculture/farming, and transportation are what heavily helps support the economy of China. China works mainly from agriculture and farming and uses its products to export to countries all over the globe. Also, China's government establishes Special Economic Zones, which welcomes foreign investment. From this, they use this income to expand manufacturing. Through their waterways, China sends ships to transport their goods to other countries. The USA is China's main customer and they import most of their goods from China.

Answerwill have thinner; have thicker oceanic sediments;

The answer to the first one is barometer.