id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
en-wikipedia-org-8024		Demographic history of the United States - Wikipedia			.html	text/html	7391	1098	68	1610–1780 population data.[1] The census numbers do not include Native Americans until 1860.[2] Main article: Colonial history of the United States Emigration to the New England colonies after 1640 and the start of the English Civil War decreased to less than 1% (about equal to the death rate) in nearly all years before 1845. The Great Migration was the movement of millions of African Americans out of the rural Southern United States from 1914 to 1960. The average age for first marriage for men is 27.4 and 25.6 years for women.[27] The United States also has one of the highest proportions of people who do marry by age 40; approximately 85% Americans are married at 40, compared to only 60% in Sweden. Richard Easterlin, an economist who has researched economic growth in the United States, explains the growth pattern of American population in the 20th century through fertility rate fluctuations and the decreasing mortality rate.	./cache/en-wikipedia-org-8024.html	./txt/en-wikipedia-org-8024.txt