What was significant about the Medici family, and why were its members able to stay in power for so long?

http://www.ctevans.net/Nvcc/Student/Florence/index.html

our paper must follow this format:

• font size 10 or 12 only
• one-inch margins
• double-spaced
• page number citations for your quoted evidence
• not to exceed one (1) page
• name at the top left
• must have brief introduction and conclusion paragraphs (each not to exceed two sentences)
• You may consider submitting drafts of your assignment to your instructor for feedback before submitting the assignment for a grade. At times, you may be asked to rewrite your essay before it is graded.  This is done for your own benefit and will result in an improved grade.