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At the first glance, who could tell that the first ballpoint pens appeared some 130 years ago? But they did and were intended for writing on leather. Today, billions are made and sold every year and we almost cannot imagine our day-today life without them. Read more about ballpoint pen history.
Compared with other art mediums, colored pencil is relatively new. It appeared at the beginning of the 20th century. But that doesn’t mean it is any less worthy especially when combined with other mediums. Here you can read more about colored pencil history.
Fountain pens replaced standard metal pens because they were easier to use and were less messy. After years of improvements (and after appearance of ballpoint pens which are even easier to use) they became a sort of status symbol. Read more about history of fountain pen.
Beginning of use of pen and ink marked the start of new era of easier recording of information. Without them, early scientific discoveries would be forgotten and development of humanity would be much slower.