This news is about U.S. to China trade war. The first key point is that in the trade deal, trump agreed to amend the north American free trade agreement but also wanted Canada to join the U.S. trade war with China. As a vassal state of the United States, Canada did not want to be involved in the trade war because Canada needs China's daily life market. The United States argues that China avoids tariffs by using its trading partners, such as Mexico and Canada. If trade continues, there will be many risks and problems. Why did the U.S. start a trade war with China? The United States is now…