How did the black death contribute to the end of europe's medieval period

The Black Death was a huge plague spread by Rats that was very contagious, it devastated Europe and killed many people, once it was done away with new tides turned and new foot holds of power proceeded forward due to knew tech, and different method of thinking.   

no creo que significa algo, yo tengo sueños bien raros tambien pero al final nada pasa. Pero si son los dos de ustedes pues no se la verdad. Si solo a pasado una vez tal vez no es nada pero si pasa muchas veces pues yo creo que ahi si.