I have figured-out what caused the Younger Dryas climatic event in 11,000 BC. It was from the Precession of the earth when a massive object passed near the earth. I believe the massive object was Nibiru because the timing of Nibiru's arrival. The proof is in the correlation between the effect of Latitude on Annual Temperature Range that matches the decline of 2-6°C (average of 4°C) in the Northern Hemisphere and the angle of Orion's Belt from North at the time when the Giza Pyramid Complex was built. I believe the Giza Pyramids Complex was built prior to 11,000 BC (ushering the age of Leo). This precisely explains astronomer Tony Fairall's claim that the pyramids have an angle of 38-degrees from North when it should have an angle of 50-degrees in 10,500 BC. If you rotate the earth to where it has a 50-degree angle (from the 38-degrees of the pyramids), you have just increased the Latitude of North America 12-degrees, causing it to rapidly cool. While global temperatures were warming, this would have thrust back into a cool icy-chill. Modern astronomers would use calculations based-upon this new tilt of the earth's axis (which explains the 50-degree calculation).
This proves that the Giza Pyramid Complex was built prior to 10,500 BC and answers the question of what caused Younger Dryas and the existence of Nibiru. I would even speculate that it explains what happened to the Lost City of Atlantis since a rapid change in the Precession of the earth would cause major flooding and tsunamis.
Precession of the Earth would cause a Tidal Force that is a secondary effect of the force of gravity. This would be similar to how the moon causes ocean tides. Ocean Tides result because the gravitational force exerted by one body on another is not consistent across it. The nearest side is attracted more strongly than the fairest side, causing a differential.
There was a 2-6°C change in temperature, which indicates about a 10-14 degree change in Latitude from the Equator towards the North Pole. This matches the 9-12 degree discrepancy between the Orion Correlation Theory. The overlap is 10-12 degrees. I think it modified it 12-degrees.
In a 1999 article in the Journal of the Royal Astronomical Society, astronomer Tony Fairall wrote:
“Bauval claims that going back to 10500 BC gives ‘a perfect match’.
Or does it? My own investigation showed that, while the line of the two outer pyramids is set 38 degrees from north, the angle of Orion's Belt to north in 10500 BC is close on 50 degrees! Hardy an exact match. I calculate that circular precessional motion would give 47 degrees, whereas including nutational terms makes it slightly higher. Measurements in the planetarium agree.”
There has been some variation over the angle measurements of the line of the two outermost pyramids. The pyramids themselves make an angle of 37° 51' 6" from a survey made by Flinders Petrie in 1881 and published in 1883 in his book The Temples and Pyramids of Gizeh. As for the angle in 10,500 BC, the late Astronomer Tony Fairall has given several calculations. In June of 1999, he said 50°, according to Bauval in 2000 said it was closer to 48° in subsequent calculations, but BBC ran a program that year saying that the angle was 54°. I think that the 54° measurement must be erroneous and that the closest measurement is between 48-50°. That still leaves us with a difference of 10-12°, which corresponds with my theory that Precession of the earth caused the Younger Dryas climactic event and led to a major global flooding.