According to conspiracy theory, Is it possible that the bitcoin was created by governments to gain financial strength in the modern world?
Which conspiracy theory are you pointing out? People who know bitcoin know that it is Satoshi Nakamoto who invented bitcoin but as to his personal identity, it is still unclear until now if he is a real person or just a pseudonym which is a person behind famous digital currency called bitcoin. If it is to strengthen financial aspect of the modern world, I doubt it because until now banks and governments are still against wide adoption of bitcoin. just my opinion.
Since the identity of the inventor of the Bitcoin protocol is unknown, this will keep the door for interpretation open indefinitely.
I do not rule out that Bitcoin was developed by a group of people working on it, but at the same time I rule out that governments or banks are the ones who did this. Perhaps the gangs that engage in criminal activities helped develop it (This is also an assumption) , but certainly not the governments that take advantage of the current system and fight the spread of Bitcoin with all the means at their disposal .