给定一个英文段落，确定该段落的主旨大意，并提取出一到两个支持大意的关键句。


After the Revolutionary War ended in 1783, disagreements arose between Thomas Jefferson and Alexander Hamilton regarding the proper balance between state and federal power. Thomas Jefferson believed that strong state governments were necessary to protect individual rights and prevent the abuse of power at the federal level. Alexander Hamilton, on the other hand, believed that a strong federal government was necessary to promote economic growth and ensure the stability of the nation. These disagreements would eventually lead to the development of America's first political parties and shape the future of American politics.
主旨：美国历史上第一次政党分化的根源源于托马斯·杰弗逊和亚历山大·汉密尔顿之间关于联邦和州政府权力平衡的分歧。

关键句：
1. "Thomas Jefferson believed that strong state governments were necessary to protect individual rights and prevent the abuse of power at the federal level."
2. "Alexander Hamilton, on the other hand, believed that a strong federal government was necessary to promote economic growth and ensure the stability of the nation."