The area comprising Shaanxi, Shanxi, and Henan formed the cradle of Chinese civilization. During the Republican era, the city of Yan’an was near the endpoint of the Long March by the Chinese Red Army, who fled from Jiangxi after the Chinese Soviet Republic was destroyed by the Kuomintang armies, and became the birthplace of the Chinese Communist Revolution from late 1935 to early 1947 and the Communists formed the Shaan-Gan-Ning Border Region in constituent parts of Shaanxi