I noticed that the price of Bitcoin change much like all altcoins.
But the price of other traditional currencies like the euro, for example, are stable and do not change much.
It is the government that control their prices?
What I know is bitcoin price affected by supply and demand which mean how big global trading volume will impact on bitcoin. Lack of liquidity and low market cap makes bitcoin fluctuate more than any traditional currency, but at least we have higher price than any other and when the market cap getting bigger where there are more people involved on bitcoin global trading, we could get stable price I guess.