  The Renaissance was a cultural movement. It was the revival of learning based on classical sources, the rise of courtly and papal patronage, the development of painting â¦ perspective, and advancement in science. It spanned from the 14th to 17th century and started in Italy.  .
Stephen Barrett, M.D. Gary Michael Null (1945â ) is one of the nation's leading promoters of dubious treatment for serious disease. He hosts radio and television talk shows; writes books and magazine articles; delivers lectures; operates retreats; and markets products through his Web site.
The theory of nullification is that the states have the unilateral power to determine the constitutionality of federal laws, and that a state's determination of unconstitutionality cannot be reviewed or reversed by the courts.