When Roosevelt issued the Roosevely Corollary, the document he was amending was called the b)Monroe Doctrine. It is important to note that this was done by Theodore Roosevelt, who served as president before Franklin D. Roosevelt, so as not to confuse the two distant cousins.
January 24, 1848 was when gold was found by James W. Marshall at Sutter's Mill
The one-child policy is not a direct result of rapid industrialization in China. It was China's response to overpopulation