Explain how this experiment disproves the theory of spontaneous generation

first to the definition, spontaneous generation states that living things rise from non-living things. This experiment disprove the theory because when the beaker of meat was left open, flies came and left their eggs on it. And the one with closed beaker couldn't have those eggs. So that's how it's disproved

the lowest among the social higher rank were the working class. this class remained detached to the political progression   of the country and was hostile to the other two classes