Why did europe had no single government during the middle ages?

Hello.

Europe was been populated by hundreds of very diverse people with different languages and ethnic origins. There has never been the slightest chance that all of these would choose a single government.

Have a nice day

there should be a waiting period

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.