Which of the Following Made Song Iron Production in the Eleventh

question 32

Multiple Choice

Which of the following made Song iron production in the eleventh century equal to that of Europe in the eighteenth century?

• A) Using sulfur and charcoal in smelting
• B) Harnessing water buffalo to bellows
• C) Using piston-driven bellows
• D) Mastering techniques for controlling explosions and high heat

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Forward Contract

An agreement customized for two individuals to either buy or sell a particular asset at a price decided upon for a future date.

Hedging

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