In 1997, Neil Howe and William Strauss wrote a book called “The Fourth Turning” in which they argued that modern history develops according to a 4-part cycle. Howe predicted that a period of turmoil would begin roughly 10 years later and that this would eventually lead to a “refounding” of the system:
We make the following big prediction that beginning about 10 years from now America is due to enter a era of crisis an era of political and social upheaval that will last around 20 years or so until the late 2020s we call this era a fourth turning and we think it’s going to be a big threshold for the history of our nation it’s going to be something on par with World War two and the Great Depression