id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ape-4752	Jiang, Wenyu; Mao, Yixin	Turner’s Frontier Doctrine and Its Impact on American Politics	2022	10	.pdf	application/pdf	5074	272	53	The Frontier Doctrine had a profound impact on American politicians and was shared by the American public, which in turn influenced the formulation and implementation of American political policy. Frontier doctrine and American foreign expansion policy.	cache/ape-4752.pdf	txt/ape-4752.txt