Del Verrocchio was Leonardo Da Vinci's teacher or master artist. He retired because he thinks he could not paint as well as Da Vinci. Though Del Verrocchio, Da Vinci would have been exposed to both theoretical training and vast variety of technical skills.
Charles Edward Anderson or known as Chuck Berry was an American musician, songwriter, and singer who is one of the pioneers of the rock and roll music. His music about teen life and consumerism features guitar solos and unique showmanship that made him a major influence on subsequent rock music. He was one of the first musicians that was inducted to the Rock and Roll Hall of Fame.
In Marbury v. Madison (1803) the Supreme Court announced for the first time the principle that a court may declare an act of Congress void if it is inconsistent with the Constitution. William Marbury had been appointed a justice of the peace for the District of Columbia in the final hours of the Adams administration. When James Madison, Thomas Jefferson’s secretary of state, refused to deliver Marbury’s commission, Marbury, joined by three other similarly situated appointees, petitioned for a writ of mandamus compelling delivery of the commissions.
Steam boats, rail roads and telegram made communication and work easy and faster.
