PU synthetic leather (also known as bi-cast leather, bycast leather or artificial leather, sometimes described as split leather) is a material made with asplit leather backing covered with a layer of polyurethane (hence the term PU leather) that is applied to the surface and then embossed.
Constitution Daily. How a C-grade college term paper led to a constitutional amendment. The 27th Amendment is the most recent amendment to the Constitution, and its existence today can be traced to a college student who proposed the idea in a term paper and was given a C by his professor for the idea.
  The Fourteenth Amendment (Amendment XIV) to the United States Constitution is one of the post-Civil War Reconstruction Amendments, first intended to secure the rights of â¦ former slaves. It was proposed on June 13, 1866, and ratified on July 9, 1868.he 14th Amendment was applied strongly in the famed Supreme Court case of Brown v. Board of Education (1954) which helped to overturn so-called Jim Crow laws and outlawed racial segregation in the United States. The Fifteenth Amendment guarantees all citizens the right to vote.