The answer should is C. St. Cyril and his brother Methodius created the first slavic alphabet in order to translate the Greek's religious text.
D.
Because the author can show how characters change (A), but they need to show how the characters acted before the change (C). And B is just what explains the character.
Answer: Lower South
Explanation: The South had slaves and the slaves worked the cotton fields, the cotton grew better in the south because it is hotter and more humid, it also rains a lot more.
The statement that best explains how the idea of Manifest Destiny led to the Mexican-American War would be that "<span>Mexico was a barrier to achieving what many believed was America’s destiny to expand to the Pacific," since Manifest Destiny held that the US was "destined" to expand all the way to the West Coast. </span>