Piano has a lot of keys but cannot open a door
During that time there were a seried of reforms that happened in Britain, these would be free trade and the corn laws, campaign against slavery, crime and punishment, improving working conditions, growth labor unions, women were allowed to vote. Hope this could help. Have a nice day.
i think that the two main causes in the Yangtze river sewage and industrial waste dumping. Apparently the river has gotten more polluted every year due to the dumping of waste contamidating the water.