Why Thursday?

So I have a question, why did Black Thursday happen? I'm not sure if I sound totally stupid in asking this, but it's something that has made me wonder a bit. We all know about the banks crashing and the Great Depression, but what happened that made the stock market drop so much in one day? I mean, a 9% decline in 1 day? That seems like an extreme sudden coincidence. I guess what I want to know is what happened on Wednesday.

Book Report-- The Rise and Fall of the Soviet Union

Ok, this book answered one of my burning questions: Why did Russia suddenly pull out of WWI? I wondered this in that way that 17-year-old females often wonder about history. Which they do. It didn't make a ton of sense to me why Russia stayed in the war for so long only to quit near the end. This book was my Mayan god. It told me that the reason they left the war was the change of power. The Bolsheiviks claimed leadership, and quickly pulled their county out of the war. This would not have happened without this change of power. I love that this book answered this for me, and I see the world differently now. I see rainbows and butterflies and Tess skipping through fields of wildflowers. She wants to check me for ticks.

GOFF 124-137 U.S. Economy

Ok, props to Kaylan for completing the optional question. I feel like that deserves high praise, and since this is a blog written by me, I shall honor myself. You did great, Kaylan.

Personal time over, I had a question from the homework. Question 5: How did WWI help the U.S. economy in the 1920s, and then hurt it in the 1930s? This baffled me, if you will. Not that that happens often. But the best I can come up with is that with the whole "Roaring 20's" idea people were spending money they didn't have, and then the markets crashed and so on. I just don't necessarially understand how that relates strongly to WWI. Help is appreciated.