books.google.com - The period between 1867 and 1914 remains the greatest watershed in human history since the emergence of settled agricultural societies: the time when an expansive civilization based on synergy of fuels, science, and technical innovation was born. At its beginnings in the 1870s were dynamite, the telephone,...https://books.google.com/books/about/Creating_the_Twentieth_Century_Technical.html?id=w3Mh7qQRM-IC&utm_source=gb-gplus-shareCreating the Twentieth Century : Technical Innovations of 1867-1914 and Their Lasting Impact