What musical period did composers perfect and standardize the concerto, sonata and symphony forms

Which statement about the draft during the vietnam war is true a. many young men were drafted b. only college students were drafted c. both men and women were drafted d. the military was made up entirely of volunteers

Why did china build the great wall of china?

Plz which of the following provisions of the compromise of 1850 was designed to appeal to slave states? a. congress passed a strict fugitive slave law. b. the slave trade was banned in washington dc. c. texas agreed to give away some of its land so that the territory would be available for future states. d. california was admitted to the union as a free state.