Although this is labeled as a daily assignment, it does have the potential to increase your grade on your research paper.
Nice thesis: Specific, an interesting cause and effect relationship. Worth arguing, since it's not at all obvious that these are the primary causes of the tulip bubble.
OK thesis. The notion that natural resources mattered more than politics was worth arguing. The next step, the word "facilitated" doesn't specify the nature of the cause and effect all that specifically, so that would need to be spelled out in a nearby sentence.
What makes this thesis good is that Everquest is a big game, and platinum pieces is only one goal. So the student had to argue that this particular goal trumped the others.
This thesis is weaker. The words, "pschological effect," are too vague, and the work "allowing" is a bit weak. These are sufficiently non-commital that it's hard to imagine an opposing viewpoint.
This is a less interesting thesis. There isn't much surprise, and it's not that bold a prediction. To make this paper compelling, the author will need to provide very strong evidence that people will be eager to give up paper money. But once such a paper is written, the thesis can be strenghened to identify how and why this transition will take place.
It's this last clause that is surprising here.
This thesis is reasonably simple (in terms of cause and effect), but it's quite surprising. One wonder how the author is going to convince the reader that a major historic time period is less important than this recent curiosity.
Theis thesis is weak because the relationship between the two ideas isn't very compelling. So, they were both fads... so what.