People do. Its the simple matter of supply and demand.

Absolutely you are right basically bitcoin do it control the crypto Market but people also right need. Because crypto Market price going to up and down only depends Buy or sell.lookly supply increase to market up and supply decrease then market goes to down.

Cryptocurrency market is not under control of any particular authority or person so you need to make yourself clear that this world of cryptocurrency is fully independent and not controlled by anyone so you should need to see the factors who fluctuate the market of the cryptocurrency .
Mcafe and another b predictor of cryptocurrency market are writing tweets at their Twitter accounts because of only the reason to separate the positivity in the cryptocurrency market .
In the present time the most of the dump in the price is only affected by the negative news and fuds , that why big Bitcoiners are trying to create positivity through social media platform so that people do not exit from cryptocurrency market because if all the traders will get out from the cryptocurrency market due to fear or panic then surely value of the old coins will become totally about near to zero .
a dumping and pumping in the market of cryptocurrency is a usual thing but this year is very much dump , we can see the past years where same condition was but after the gap of one year we found that a b pump taken place .
So don't be negative and be positive that soon you will get much profit .

The control in any business is also necessary. And in the currency markets that the world is using, governments are intervening and controlling the dollar, Yen Japanese, and ero. And in the crypto market the control of Altcoins is bitcoin. But this control of Bitcoin accidentally made the Altcoins dependent on price and development.

well its impossible to someone can control price right know for BTC . its very high price and high demand .
but for coin ICO or altcoin very possible to happened , some group or developer of coin it self possible to do that thing.

nobody controls the market, nobody can't control the bitcoin price or other cryptocurrencies price, but if you ask who are people that can control bitcoin and cryptocurrencies? the answer is all people that involved in the bitcoin, the demand and the stok in the market that created by the investor and trader is affect bitcoin price and i think that it is the big factor that makes bitcoin price is rise up or drop

I think the only one who can manipulate the market is a big investor, because the price goes up and down the buying and selling factors, if the sales volume is greater than the purchase it is likely the price will go down, and vice versa if the purchase volume is more likely the price will rise, they affect token level and crypto currency, I'm sure they also set the background of the news that is not good for the overall market.

 Who controls gold? This is the exact reason bitcoin and cryptocurrencies were created. To relieve the governance of a president, group, or government. With the exception of some coins the main idea of cryptocurrencies is to be decentralized. Bitcoin is probably the most decentralized and largest coin… given that we don’t even have a founder/creator.
 The goal of this is to not rely on the government and to not be pushed around by them either. With a fiat currency we can just create more money and make the value go down or even burn the money to make it go up. It’s value is really determined by the country and how well it’s doing. With Cyptocurrencies it’s way more valuable and can’t be manipulated so easily(provided the coin is distributed around and has a fairly large market cap). If your countries fiat fails you have nothing to worry about, it’s as if you were just to hold gold but with a way to transport it and actually use it in your daily life.

Of course, I'm sure there's a certain group of people owning most of the coins. It's a conspiracy theory, if you like. I think it's just a natural current of the market: After takeoff is always a drop, and then comes stability.