Answer: About the same time they domesticated plants, people in Mesopotamia began to tame animals for meat, milk, and hides. Later, people began domesticating larger animals, such as oxen or horses, for plowing and transportation. These are known as beasts of burden. Domesticating animals can be difficult work.
1-didn't give power to tax so the nation had trouble raising money for their debts 2-Couldnt send military or officials to stop rebellions like shay's rebellion 3-Overall limited the power of the government and stopped them from regulating the nation to it's best