D. Is the correct answer. A and B are false because they tell you "the US fought from the beggining of the war to the end" and C is false because the US did participate in the war.
Answer:
Remembering how badly the Texans had been defeated at the Alamo, on April 21, 1836, Houston's army won a quick battle against the Mexican forces at San Jacinto and gained independence for Texas. Soon after, Houston was elected president of the Republic of Texas.
Spain conquered most mesoamerican cultures.
The answer is voters because they have a lot of campaigns