Tax resistance, especially the Boston Tea Party (1773), led to punitive laws by Parliament designed to end self-government in Massachusetts. In 1776, the Second Continental Congress declared a new, independent nation: the United States of America.
Led by General George Washington, it won the Revolutionary War with large support from France.
A convention in 1787 wrote a new Constitution that was adopted in 1789.
With Washington as the first president and Alexander Hamilton his chief adviser, a strong central government was created.
Purchase of the Louisiana Territory from France in 1803 doubled the size of the United States. territory expanded all the way to the Pacific coast.
Confederate defeat led to the impoverishment of the South and the abolition of slavery.
In the Reconstruction Era (1863–1877), legal and voting rights were extended to freed slaves.
Results were analyzed in a narrative systematic review, taking account of methodological quality.
We identified adequately robust evaluations of 44 programs, delivered in diverse settings.
Targeted programs with intensive parental involvement can modify adolescents' sexual behavior, although the review was limited by the lack of rigorous evaluations.
Few programs addressed behavioral control, parent–child connectedness, or parental modeling, all suggested by observational research.
A second and final war with Britain was fought in 1812, which solidified national pride. While the United States was large in terms of area, its population in 1790 was only 4 million.
However this grew rapidly, reaching 7.2 million in 1810, 32 million in 1860, 76 million in 1900, 132 million in 1940, and 321 million in 2015.
In nearly all cases, the parenting component focused on improving parent–child communication about sex.