To me at least it would be the first answer. if you would like a proper explanation to this let me know :D
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Answer:
I can't answer 13, but 14 is silk, ancient China kept secret the way to make silk because (15) it gave them an advantage in trade (the silk road) because other countries would trade their goods for silk since china wouldn't tell them how to make it. Hope this helps!
Answer:
Explanation:
The Louisiana Purchase (1803) was a land deal between the United States and France, in which the U.S. acquired approximately 827,000 square miles of land west of the Mississippi River for $15 million.
Trail by ordeal was an ancient judicial practice by which the guilt or innocence of the accused was determined by subjecting them to a painful, or at least unpleasant usually dangerous experience. The test was one of life or death, and the proof of innocence was survival. In some cases the accused was considered innocent if they escaped the injury or if their injuries healed.