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What is the origin of demo?
This is the abreviated form of the word 'demonstration' and is of Latin origin. In means an exhibition or a practical illustration, a public exhibition of feeling
What were Alexander's accomplishments?
Bell won the Centennial Exhibition award for his invention of the telephone at the "world's fair's".
What are the geographical surroundings of the great plains?
it has an open range and very little rainfall
Why is there an open class system?
An open class system is a great thing to have. This is how the United States works. In many cultures, a person is stuck in the class they were born into, no matter what. In an open class system, people can not only rise in class, they can also fall in class.
What did Alexander parks invented?
Parkes created the first manmade plastic in 1856. He publicly demonstrated it at the 1862 Great International Exhibition in London. The material called Parkesine was an organic material derived from cellulose that once heated could be molded, and retained its shape when cooled. Unfortunately, the material (also known as synthetic ivory) did not find wide application and Parkes' plant closed in 1868.
