Final answer:
The Arab Muslim caliphate's economy was greatly improved by the inventions of a banking system, advanced irrigation systems, and papermaking.
Step-by-step explanation:
One invention that greatly improved the economy of the Arab Muslim caliphate was the banking system. The Arab Muslim caliphate established an elaborate banking system that facilitated trade, provided credit, and promoted economic growth. This innovation allowed merchants to safely store their money, make transactions, and access credit, which ultimately stimulated trade and commerce.
Another invention that positively impacted the Arab Muslim caliphate's economy was the development of advanced irrigation systems. The Arabs introduced new techniques for managing water resources, such as using qanats (underground canals) to bring water to arid regions. This allowed for the cultivation of more land and the growth of agricultural production, resulting in increased prosperity.
Furthermore, an important technology that contributed to the economic advancement of the Arab Muslim caliphate was papermaking. The Arabs learned papermaking techniques from the Chinese and improved upon them, making paper production more efficient and affordable. This development facilitated the dissemination of knowledge, expanded literacy, and supported the growth of various industries, including book publishing, leading to economic progress.
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