Ban goc (Tiếng Anh)

PREFACE. Rapid growth accompanied by a somewhat painful readjustment has been one of the leading characteristics of the history of the United States during the last half century. In the West the change has been so swift and spectacular as to approach a complete metamorphosis. With the passing of the frontier has gone something of the old freedom and the old opportunity; and the inevitable change has brought forth inevitable protest, particularl