Okay I only know 2 things: The sinking of the Lusitania and Zimmerman Telegram. What started the war the ruler of the ottoman empire was assassinated and what expanded the war was the Zimmerman telegram.
Answer:
they were more slave owners in the south because they wanted to make more money
The reason the joined the triple alliance was for more control and goods
Hope that helped thanks are welcomed
It is important to limit a government's power because, unchecked, a government can impose laws