Which of the following items could serve as a secondary source for a historian studying early chinese history?

Why did the south decide to fight a defensive war 1.to protect their plantations 2.to make the north look like the aggressor 3.to take advantage of their knowledge of the land 4.to make maximum use of the limited transport system

The directory was unsuccessful and was eventually replaced because no constitution had been created that outlined its authority. it was connected with the reign of terror. its members did not get along with napoleon. the national convention did not agree with the directory's decisions.

How was the u.s. economy different from european economies following world war 1?