The organism "Bacillus" form spores (endospores).
The United States and South Africa share strong educational and people-to-people ties, significant economic and political interests, as well as common development objectives throughout Africa. ... The United States seeks opportunities for increased U.S.-South African cooperation on regional and international issues.
USA had a better navy. (The White Fleet?)
USA was backed by guerrlia warfare in the Philippines.
USA had terrible guns going against the Spanish in the San Juan hill.
The USA Springfield Gun 1892 - 99 side clip was highly inefficient compared to the Spanish Mauser.
The Spanish had more firepower the Maxim beat the Gattling Gun.
I'm at least 85% sure that the answer would be A, it seems like the most secure answer to give.