Yes, generally speaking it is true that historical geology is primarily the history of the earth's crust, although the ramifications are somewhat wider in that the discipline takes into account things that happened due to the crust's changes as well.
It was after world LL when the economy crashed. many recognize it as the stock market in NY crashing , but it's actually affects places all around the world .Main reasons for this great depression are. 1. the increasing debt to fund the war. 2. the higher demands on crops and and product and putting many farmers out of business. 3. The unbelievable lowered price on everything.
