Which imperial power had the most colonies spread out across the world in 1900?

During the cold war, which of the following groups of countries would have all been"behind the iron curtain"

Which of the following was probably the most difficult challenge facing construction of the railroad?

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