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I think it was the rise in the price of bitcoin. The second BTC started surging, everyone started dumping their coins for BTC.

I personally believe that what causes the decline of

most cryptocurrencies this past few weeks is the decrease in demands of most cryptocurrencies,the less

demands a cryptocurrency get the lower its price would be, bitcoin market irself controls many other

cryptocurrencies and that is why when bitcoin declines then many other cryptocurrencies will decline too

because they mostly follow the prices and acitivities of bitcoin....

When there is poor demands of a cryptocurrencies it would definitely make the price of such

cryprocurrencies to become bearish because there will

be more supply than demands and that would force the price to go down to enable increased

demands,damands and supply works together on the cryptocurrency market to determine the bias of the

market...so less demands made the many cryptocurrencies to have a decline in price at the market....