Q: I have a question about an oily film that has been covering the trees in our area. I have 36 acres of poplar forest and it is covered! This sticky oil is all over trees, shrubs, vehicles, etc.Some tree leaves (eg. saskatoons) have been turning black where the sticky oil is.: I found your column on the Web and am hoping you can answer a question for me. I have six hybrid poplar trees in my backyard about 25 to 30 feet from my foundation. After eight years, the trees are quite large (more height than width).
Effects of the Crusades. advertisement. advertisement. Although the crusades failed to capture Jerusalem, they had several major impacts on Western Europe. They increased the authority of the king: Sometimes nobles died in battle without leaving an heir in which case the king got their land. Kings passed taxes to pay for the crusades. To pay this tax some nobles had to sell some of their land. Other nobles used the sale of land to offer serfs a chance to buy their freedom. Without as much land, nobles did not need as many serfs. As for the peasants, they were free to leave.
Economic Impact. During Medievel times, there was a large group of trade routes and cities connecting Europe and Asia, known collectively as the silk road. In the early 13th century the Silk Road began to be used less. When Genghis Khan and his Mongols conquered Asia most of the Silk Road came under his power. This allowed for great economic growth for his subjects, because crime was taken care of by the Mongols. ` Genghis Khan also set the foundation for an effective mail delivery service.