system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do countries actually take control of another country once they occupy the capital?

Like, when the capital falls, how does the country fall under the control of the opponent? How does it actually work, can't the existing government just say "No we're not listening to you we're doing our own thing?" Not just the capital but like cities in general, when the city centre falls, what makes the whole city fall? Also, if I'm understanding this correctly, can countries just skip the actual war and just occupy the capital if that's how it works?
gpt
"Occupy the capital" probably implies that they've pushed their forces through the entire country and successfully reached the capital.  "Take control" probably means either "literally holding a gun to the leader's head until they 'voluntarily' declare that you're now in control", or "leaving troops all over the country, proclaiming that you're in control now, and daring anyone to argue with your soldiers and tanks and bombs".

There's no switch that's flipped or anything, it's just making a declaration, backing it up with either violence or the threat of violence, and being that way for long enough that people just get used to it and accept that you're in control now.