1. - They enjoyed extraterritoriality, and were not governed by China's laws.

2. The issue of extraterritoriality had been a major block to Sino - American relationship.

3. Because of the existence of extraterritoriality, the case was tried by the foreign envoys in China.

4. It also embodied the concept of extraterritoriality (foreigners were subject to the laws of their own countries but not to Japanese law).

5. Externally, the treaty led to the United States-Japan Treaty of Amity and Commerce, the "Harris Treaty" of 1858, which allowed the establishment of foreign concessions, extraterritoriality for foreigners, and minimal import taxes for foreign goods.