I believe it is c they were ruled by emperors
I think it is B <span> By allowing more labor unions</span>
Specialization of labors leads towards productivity
Examples of man-made disasters include explosions, pollution, terrorist incidents, shipwrecks, stampedes, industrial incidents, climate changes, wars, etc.
The <span>constitution denies both the state governments and the national government power to grant titles and nobility to prevent monarchy. This is a step taken to allow no person to get absolute power in regards to controlling the country. I hope that this is the answer that has come to your great help.</span>