One of the first masters of the walking bass, his association with Basie goes back to the 1920s; he had a superb sense of timing that helped promote the bass to its role as principal time keeper in the band:

Walter Page

Explanation:

Walter Sylvester Page is known for being one of the first to play walking lines on the string bass. He was a star of the Count Basie band (1935-42) but already had been playing with Basie from 1925 to 1931 when Basie was the pianist in Walter Page´s Blue Devils Band.  

b)

it created free trade throughout the colonial territories.

the correct answer is a: slaves from other colonies ran away to georgia.