For everyday increase the user of bitcoin and the investors also is increasing daily too in bitcoin world. I think with that things it can be consider as strong actually, in fact there are other country are totally adopt the system of bitcoin to their citizens there.
Well, it is not the main reason why bitcoin become stronger nowadays. As we can see, Bitcoin is playing an important role in the financial system. Bitcoin has caused many impacts to the world ecosystem for the past few years and due to fact, more and more people start to use Bitcoin and learn about Bitcoin.