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Just like every market, the major factors that determine the price of assets is total demand and supply.

If the demand for a particular cryptocurrency is higher than the available supply, the price is bound to rise very high but if the supply is higher than demand then the crypto will have a very low market price.

When there are low investors on the market which then made the demands of the cryptocurrency to be very low and its supply becomes higher thereby forcing the price of the cryptocurrency to become lower in the market...