Final answer:
Shays' Rebellion was a key factor that radicalized the idea of a somewhat centralized government in America, demonstrating the weaknesses of the Articles of Confederation and leading to the drafting of the Constitution.
Step-by-step explanation:
The radicalization of the idea that a somewhat centralized government was needed in America was largely prompted by b. Shays' Rebellion. This insurrection highlighted the weaknesses of the Articles of Confederation, such as the lack of power to raise an army and deal with civil unrest. The Articles of Confederation, America's first constitution, established a very weak central government that lacked critical powers such as taxation and regulation of commerce.
Following the uprising and the inability of the national government to respond effectively, it became evident to many that the Articles were insufficient for the needs of the young nation. To address these problems, the Founding Fathers eventually drafted the United States Constitution, creating a stronger federal government that could maintain order, liberty, and provide for the common defense.