Why did buisness leaders begin the practice of vertical integration

What makes this speech a primary source? o a. the words are spoken by the president himself. o b. it uses narrative to keep the reader's attention. o c. it was written over 70 years in the past. o d. it contains a strong historical argument.

Which roman emperor was responsible for a major shift in the dominate religious attitude of the roman empire?

What does the document of the birtish octopus is an uderlying cause of the world war 1