You will get 34 points if you answer plz im timed Why was the development of zero an important advancement in math?

A. Zero could be used to create integers.

B. Zero was used to represent a large value.

C. Zero could be used as a placeholder or to write larger numbers.

D. Zero was used by Indian astronomers to calculate the sizes of stars.

Does manufacturing in the midwest affect the nations economy

Danilo has been working for metropolitan taxi for three months. he expected that his job would be to drive around the city, pick up fares, and drop them off at their desired locations, but in his first few days on the job he realized that the job entails much more. he must keep his taxi cab clean and neat, and some days he will be stationed at the shop and go to people's houses to pick them up and bring them to the local airport. within a few months, he has learned that taxi drivers often express frustration with the people they call "civilians"—that is, non–taxi drivers, whose driving skills they complain about incessantly. in his first few months on the job, describes what danilo is undergoing.

Many of these mythological stories were filled with violence. why do you think this is?