Bitcoin bullish momentum always affect altcoins and I strongly believe that bitcoin is going to get bullish this year. Altcoins has refused to recovered since December 2017 and we hope this year is going to be different because of the halving.
Bitcoin is a trust bridge connected to altcoin, so the rise of bitcoin is always an opportunity for altcoins when altcoins can rely on that trend and form similar trends, and people are appreciating bitcoin's uptrend, it's probably going to happen when the halving event seems about to begin. However, the prediction only follows a certain theory, the effect from this event is still not clear for bitcoin, Bitcoin's value is still moving sideways, requiring a lot more time to go up, so the market right now is just fog, hope or despair, which takes more time to explore