Coins once had real value as currency because they ______.

সঠিক উত্তর

were made of precious metals.

বিস্তারিত ব্যাখ্যা

এই প্রশ্নের বিশেষজ্ঞ বিশ্লেষণ

Then the barter system was replaced by coins, which still had real value since they were pieces of rare and precious metal.

রেফারেন্স মাত্র

were a great improvement over barter.

permitted easy transportation of wealth.

could become collector's items.

were made of precious metals. সঠিক

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English Grammar