I believe they wanted a weak central government in 1776 so that they could earn their spot into the government and get what they wanted.
The Mexican-American War, waged between the United States and Mexico from 1846 to 1848, helped to fulfill America's "manifest destiny" to expand its territory across the entire North American continent.
The answer is "Nature vs. Nurture".
The nature versus nurture debate is about the logical, social, and philosophical open deliberation about whether human culture, conduct, and identity are caused basically by nature or nurture. Nature is frequently characterized in this verbal confrontation as hereditary or hormone-based practices, while nurture is most generally characterized as condition and experience.