<em>Well, Why did Americans want to add California to the nation? They wanted to build ports on the coast for trading with China and Japan. Because, California's constitution BANNED slavery. The Southern states objected to making CA a state because it would upset the balance of free & slave states. </em><em>Good Luck!</em>
America wanted California because of the gold available there that they didn't want other countries to get.They also wanted to express there natural born right o Manifest destiny on their newly found land.
