In the year 1519, the Aztecs under the leadership of Montezuma was surprised with the coming of the bearded European led by Hern
ando Cortez. With the thought the visitors might go away if he give them presents, he summoned his men to give the visitors big pieces of gold and silver. What do you think happened after this?
In the early 1800s, mass production was made possible by the use of a series of inventions which made it possible to use a few amounts of energy to produce an unprecedented amount of products
