The beginning of modern astronomy can be traced back to Nicolaus Copernicus and his book, On the Revolution of Heavenly Spheres. What theory did
Copernicus promote in this book, which was in conflict with the teachings of the Catholic Church?

The Earth was not the center of the universe.

Explanation:

vertical merger is the term used for the joining of two or more firms involved in different stages of producing the same good or services.

explanation:

answer; ok in rural area most people depend on private transportation(cars),pick up truck,donkey and buggy: ),and urban people can walk or ride public transportation,bus,train cab,uber.