An MBA is a Masters of Business Administration which is a Masters Degree which is graduate school. Undergraduate is a Bachelors Degree (4 years of college) or an Associates Degree (2 years of college). Some schools have Masters Degree programs that are like 4+1 (5 years) that are a bit accelerated.
In 1847, the United States Post Office Department printed its first stamps, a 5-cent stamp picturing Benjamin Franklin and a 10-cent stamp picturing George Washington.
The United States issued its first postage stamps in 1847. Before that time, the rates, dates and origin of the letter were written by hand or sometimes in combination with a handstamp device. Since enactment of the Postal Reorganization Act of 1970, postage rates have been set by the Postal Regulatory Commission.