"<span>C to ensure that U.S. businesses could operate in China" is the correct answer for </span>why the <span>the United States announced the Open Door Policy</span>. This was essential for trade.
Linguistics: the study of human language
Cuneiform:symbols used to represent objects
Anthropology:the study of people
Petroglyphs:pictures carved out of stone
Archaeology:the study of the lives of early human communities through the examination of the remains
Hieroglyphs:symbols used to represent sounds
The best answer would be <span>Understanding how history has affected the lives of people today. If you understand what happened in the past and why, you can know how to prevent bad things from happening today because history often repeats itself. It even exists as a common phrase that history repeats itself</span>