Bitcoin recently held a halving and the reward for miners has decreased.
What is halving? What does he give besides this?
Halving is a decrease in reward for every new Bitcoin block mined. At the moment, each new block brings 12.5 Bitcoins to its miner.
For miners halving it's not good, but for BTC price it's may be good. Less amount of BTC miners sell - less resistance for price growing
It was good in 2012 and 2016. At this stage, I think halving couldn't be a reason for serious bullrun, as in 2016, as example
Of course. Now traders, especially large ones, have a great influence on the market.