How did control of economic resources affect the power structure of medieval europe? ?

Ialready know the answer to this question but i wanted to ask you guys to see if you know. who started the okinawan karate style ryukyu kempo? when year was it found?

Which of the following is a problem in the health care system of the united states? a. too many doctors in rural areas b. too many doctors who are general practitioners c. fraud d. costs that are too low

Because of the housing bubble, many houses are now selling for much less than their selling price just two to three years ago. there is evidence that homeowners with virtually identical houses tend to ask for more if they paid more for the house. what fallacy are they making?