An enzyme is a catalyst that helps to speed up the rate of a reaction by lowering the activation energy of a reaction. There are many enzymes in the human body, without which lots of important reactions would never take place. Cellular respiration is one example of a reaction that is catalysed by enzymes.
Sullivan Act Tim Sullivan, a major Irish criminal passed the Sullivan Act in 1911 to help his constituents rob strangers or to help them against Italian incomers. That is the crux of story that goes with a very early gun control law.
The Glass-Steagall Act, also known as the Banking Act of 1933 (48 Stat. 162), was passed by Congress in 1933 and prohibits commercial banks from engaging in the investment business. It was enacted as an emergency response to the failure of nearly 5,000 banks during the Great Depression.