Anti-German sentiment
Since the beginning of World War I, propaganda has played an important role in exploiting the opposition. The credibility of propaganda can be determined by analyzing the source and comparing it with documents that are factual. In particular, British propaganda in World War I used "Christine", a series of letters written by Elizabeth von Arnim, pen name Alice Cholmondeley, to promote Anti-German sentiment propaganda. When comparing the "Christine letters" to authentic war time letters, they were found to be fabricated.