Closely related to the 70-year innovation cycle is the 60-80 war cycle, at least, in the Anglo-American world. In fact, it could be said that periods of innovation (and rapid socio-economic change) spur wars. The correlation isn't perfect, but it's pretty close. And this is since about 1500.
The 1588 Armada War, England-Spain. This followed the commercial revolution of the 1570s, specifically the tension caused by Sir Francis Drake's raids on the Spanish Armada, which John Maynard Keynes later calculated to be the foundation of British national wealth.
English Civil War, 1640-48. A direct result of the artisan revolution of the 1640s, that shifted the industrial balance of power to the Cromwellites.
War of Spanish Succession 1697-1715. Was largely driven by population pressures that were relieved by Jethro Tull's agricultural revolution in the 1710s.
American Revolution 1775-1783. The Americans felt the Industrial Revolution coming on, and had no wish to be held by England in "Third World" status as she did to India.
Civll War 1861-1865. "Fourscore and seven (87) years after the beginning of the last war, as the railroad revolution pushed the North ahead, and threatened to leave the South behind economically.
World War II: Followed the Depression of the 1930s, which in turn was caused by the Roaring Twenties. Both the "American" Twenties and the Versailles Treaty was caused by the defeat of Germany in 1918, sowing the seeds for a future war. "We meet again in 20 years," vowed a German colonel at Versailles.
The Current Period. The Internet Revolution of the 1990s led to industrial "offshoring" and bogus financial "innovation," which helped to lay the ground for a global Depression, and possibly another world war.