Which kingdom was responsible for introducing feudalism from mainland europe to england

Which of the following factors would be a likely reason for low population density

How could indian agents profit their assignments?

Match the people with the appropriate description. vernon and irene castle arthur murray fred astaire willi ninja a. stylized the forms of ballroom dance by incorporating other dance forms b. responsible for renewing the influence of ballroom dance in america c. godfather of vogue danced. responsible for standardization/teaching of steps leading to spread of ballroom dance education