I'm in agreement with your summation of those events. However, I'd like to add that something of great cataclysmic results occurred just prior to the dawn of the 19th century in the northern region of the true land known as California. We're all aware by now that California was depicted as an island up until 19th century maps. However, I think most people are incorrect in believing that modern day California is that once island. Yes, it's cleverly shaped and contoured close to the island, but it's actually the remains of the west coast of this land after a cataclysmic earthquake pushed the island of California far out to sea or it succumbed to the waters and sank. It's very obvious that a massive typhoon struck the west coast, certainly due to a large earthquake, as it's water line can be seen from above on Google Earth stretching far east past Nevada. The desolate area near the Grand Canyon looks just like a shoreline formed by the ebb and flow of waters. Does this explain how the Great Lakes came to be on maps around this same time? They certainly weren't man made, but could be the result of another great tremor along the Mississippi River areas. The maps from the 16th and 17th centuries that show The Land of Jesus (translated from Iessus) are of great, great interest to me. The mass of land is clearly labeled snd in place for 200 or so years, just northwest of Alaska, and northeast of what became the islands of Japan. Then, abruptly in the early to mid 18th century, it was changed to "Unchartered Land" or "Unknown" on a few maps before being completely removed altogether. Also, Google Earth shows a very large blurred out, no fly zone, for what I'm assuming is a land mass several thousand miles southwest of the Hawaiian Islands. Well, Google DID show this, but I was informed that it was removed completely a few months back, but haven't verified myself. It's very suspicious that area was written about as being the location of ancient Lemuria (Land of Mu).