This is from a book called 11:11 The Time Prompt Phenomenon
by Marie D. Jones and Larry Flaxman

The History Repeats Itself Every 49 Years is by Jim Snell:

1812: Percival, the prime minister of great Britain is "assassinated" and War of 1812
Then 49 years later...
1861: Beginning of the Civil War, and assassination of Abraham Lincoln

Then, 49 years after 1865...
1914: Assassination of the Arch Duke of Austria, Franz Ferdinand, which triggers beginning of World War I.
Then, 49 years after 1914...

1963: Assassination of John F. Kennedy, and we were in the very beginning of Viet Nam at the time.
Then 49 years after 1963...

2012:Will we have another assasination of a "World Leader", and maybe thebeginning of World War III? Will the "49 year cycle" be broken, or arewe going to witness the beginning of the "Mother of All Wars"? We shallsee!

Also note that every other assassination was an American President