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.
In 1873, the Post Office began producing a pre-stamped post card. One side was printed with a Liberty-head one-cent stamp design, along with the words United States Postal Card and three blank lines provided for the mailing address.