The correct answer is B) emergence of a written language
Unlike the other mentioned things, emergence of a written language did revolutionize Native American cultures. Everything else mentioned here was just there and completely normal as they were hunters and what not.
A. The Philippines. The Treaty of Paris (1898) officially ended the Spanish-American War. The United States acquired Guam, Puerto Rico, and the Philippines as territories
It was the Department of Energy that Jimmy Carter established. This was mostly due to the fact that he was one of the first presidents concerned with energy conservation in the US. <span />
The answer to your question is c
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