At the end of the nineteenth century, which invention allowed color to be projected with increased brightness and clarity?

All of the following are characteristics of the Colosseum in Rome EXCEPT:

a. the use of groin and barrel vaults b. it was used for chariot races c. it once had a retractable canvas roof d. it was built of concrete and brick and faced with marble

____ did a series of forty-one paintings on the life of Francois-Dominique Toussaint-L'Ouverture, a slave who led a revolt in Haiti that resulted in the abolition of slavery there in 1794

a. Jacob Lawrence b. Mona Hatoum c. William Hogarth d. Jenny Holzer