Conjunctivitis is a common and uncomfortable eye condition that can be caused by infections, allergies or irritants. The conjunctiva is thin clear tissue covering the front of the eye. One or both eyes may be affected, and the condition can spread from one to the other.
I'm assuming that by America you mean The United States. There's no country called America. Even when excluding Taiwan and other disputed territories, China is larger than the United States, both in terms of land area, and in terms of land area including inland waterbodies. By land area only: China: 9,326,410 sq km. United States: 9,161,966 sq km, 1.8% smaller than China.
Chinaâs GDP is ~2/3 that of the US. On a per capita basis, itâs between 1/6 and 1/7th the size of the USâs. That means China is a really big economy largely because it has a ton of people, not because itâs a rich country. In 2013, Chinaâs GDP per capita was less than 70% that of Mexico, for perspective.