Answer:
1. C
2. C
3. B
Im not too sure about #1, but the other 2 are correct.
In the 1850s they defended slavery in the United States, and promoted its expansion into the West against northern Free Soil opposition.
The correct answer is A. The Yalta conference was a meeting between certain powerful countries such as the USA and USSR to decide how to defeat Nazi Germany. <span />
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.
A statement in the Declaration of Independence confirms that with these statements:
We hold these truths (Natural and Individual Rights) to be self-evident, that all men created equal, that they are endowed by their Creator with certain unalienable rights, that among these are life, liberty and the pursuit of happiness.