<span>- They allowed sailors to go on longer voyages
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-They helped sailors locate large amounts of gold in Africa.
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The Qin introduced common coinage, meaning a form of ´fiat´ currency backed by the central government. It was called a ´ban liang´, and they could be issue by local nobles as well as by the emperor. A system of coinage is important for the unification of a massive empire because it facilitates trade and the recollection of revenue for the central government. As such, it becomes easier to raise a common army, which is essential for unification of different warring states.
Answer: Is not effective is controversial and not yet widely accepted, especially in the US
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Answer:
Many Mexicans who lived in Texas, wanted to escape from Mexico. They did not like rules and the laws made by Santa Anna, Mexico's president. The Tejanos and Texans decided to fight for their independence.
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