The answer is b. His work became the basis for algebra.
Answer:
The Crusades in the Holy Land introduced Europeans to Eastern goods.
Explanation:
Medieval merchants reopened and expanded contact with other parts of the world. In this way, they continued what European Crusaders had begun. Merchants and explorers traveled farther in the Late Middle Ages. This brought them back into contact with the people of Africa and Asia. Trade expanded, and they brought back goods and ideas from these lands. Some cities and communities formed groups for mutual defense of their trade and markets. These changes set the stage for the Age of Exploration that would soon follow.
In a free market, supply and demand determine the number of goods produced: the more needed, the more is produced, and the type of goods produced: only the goods that are needed are produced.
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It focuses on broad issues such as GDP, unemployment, inflation, interest rates etc.
