The roman engineering achievement that made large public structures possible was

Roman Concrete. Roman Concrete (also called opus caementicium) was one of the most important engineering achievements from the Roman Empire. It was a material based on hydraulic-setting cement, which is what some modern cements (like Portland cement) are based on. There are still some differences that make this concrete special, mainly the fact that they incorporated volcanic ash to prevent cracks from spreading.

fearing kabuki could corrupt the nation’s morals, japanese government officials

explanation:

the national morals was so the japanese and the kabuki would stop fighting

because its important to learn about other countries and how high tech they are compared to us. also its good to learn about other cultures and how ours differs and in common also we need to learn about companies that we still buy since they ship it here.