what causes the increase in the price of the ethereum?
Still there are many cheap coins in the market those coins are good to invest. If you are going to invest on ICO you have to look their project completely whether it will move further or not.
White paper and blog will give that information to you will that project goes big or not in future.
As like ethereum is the best coin next to the bitcoin and it is growing tommorow along with bitcoin. I am really confuse that how the bitcoin price along with the centralized currency. It is kind of attraction taken on investors to go to ethereum. Go with bitcoin for your security.