Cryptocurrency is related to Bitcoin. Bitcoin has been invented for more than a decade. After Bitcoin was invented, many digital currencies that used blockchain technology were derived. Many people saw the benefits of Bitcoin and now they have developed many altcoins.
The influence of market sentiment. Many investors refer to Bitcoin price trends when trading. Many investors refer to Bitcoin price trends when trading. Prices usually fall, which makes everyone panic about the crypto market.
Yes, it seems most of altcoins are dependent on the market value of bitcoin and ethereum and maybe that is no doubt since the power two coins are the pillars of crypto currency most specially to bitcoin. So far most of the traders will always end up to trade altcoins to btc or ethereum before it was converted to fiat currency.