I would either say A.
Because of the fugitive slave act of 1850, Different states started abolishing slavery, the south was against this because the South had plantations and crops and it would be hard to manage all on their own. Leading to people arguing and trying to find the compromise.
The answer is as follows:
Britain annexes New Zealand. 1840
United States warships arrive in Japan demanding that Japan open its ports to trade. July 8, 1853
New Zealand becomes independent. May 7, 1856
Meiji Restoration. 1868
France takes over Indochina. 17 October 1887
Sino-Japanese War. 1894–1895
Spanish-American War. April 21, 1898
The United States annexes Hawaii. July 7, 1898
Filipino-US conflict. 1899–1902
Australia becomes an independent commonwealth. 1 Jan 1901
Russo-Japanese War. 1904-1905
Good luck!
-RxL