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It is the second option because optimist is someone who is hopeful.
Sentence 2 is neutral because the other sentences have words that give off a negative connotation, like wrangled and bickered, thus making them not neutral.
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The Silk Road was a network of trade routes that were important in linking the Western World with Asia and the Middle East.
- The Silk Road was established by the Han Dynasty in China and it officially opened trade with the Western World
- The Silk Road was vital for trade between China and the Roman Empire. It was also the trading route between China and the medieval European kingdoms.
- The Silk Road impacted both the East and the West and was vital in the promotion of cooperation and unity among the regions.
In conclusion, the Silk Road helped international trade and was vital in improving commerce.
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