1.The tertiary industry is the largest economic sector in China.

1.The tertiary industry is the largest sector of the U.S. economy.

2.The main industry of the tertiary industry in the United States is service industry, including the industry formed by the industrialization of new technology

China's three industries are relatively more even.China's three major industries are relatively more equal, because China's natural environment is very suitable for farming, the development of primary industry, and China's manufacturing industry is also very developed.
The reason why China's public service industry is developed is that China has a large population and people need more kinds of services. Compared with other countries, the service industry will be more developed.China's transportation industry is developed because of China's superior geographical location, close communication with other countries, and there are a lot of ports can be used for transportation, so the transportation industry is also very developed

The industrial development of the United States is relatively uneven. The ratio of the tertiary industry is much higher than that of the primary and secondary industries. Because the natural environment and economic structure of the United States are not so conducive to the development of the primary and secondary industries, the United States pays more attention to the development of high-tech industry and improves the development of service industry. For example, Microsoft is the leader in software development, and apple is the leader in electronic