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.
. . States were also given a chance to propose changes, or amendments. Three-fourths of the states have to approve the amendment for it to become law. In the past 200 years, the Constitution has been amended 27 times.The 13th Amendment, in 1865, forever banned the practice of slavery. The 15th Amendment, in 1870, gave all citizens the right to vote, regardless of their race.Americans have added laws only to take them back. . States were also given a chance to propose changes, or amendments. Three-fourths of the states have to approve the amendment for it to become law. In the past 200 years, the Constitution has been amended 27 times.