I would say <span>chinampas but I don't know for sure
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The Tsar was related to the British Royal family. if he lost his power they'd lose thier influence.
One of the reasons why the Roman Empire produced more coins is because the Empire was constantly expanding and they needed to more money in circulation. Another reason was that people would chip the sides off the coins.
Its either A or D but i say more on A bc they needed more natural resources especially from the S Pacific since they were an island country