If i remember correctly it was the political, economic, and social institutions. I hope this is the right answer because i am really not completely sure about it!!!!
<span>65%. While the share of the electricity generated by coal is declining, it remains the dominant source of electricity generation in the United States. This is because there remains significant coal generating infrastructure, and in comparison to many alternative sources, coal is relatively inexpensive. Additionally, modern technology allows coal fired power plants to mitigate some of the most acute problems with burning burning coal.</span>
Answer
B. It made the production of goods more efficient and decreased prices.
Why
Because this is the most reasonable advantage we have from advancements in robotics relating to economy
A tragedy from greek history is the persian invasion. it led to the fall of the greeks and was the biggest war in greek history