Answer:
All of them are. Every color that you or anyone else has ever seen, every color of
paint that has ever been mixed, every shade of fabric or hair that has ever been
dyed, is in the rainbow. Most of them don't have names, but they're all there.
There are seven colors in a Rainbow. The total sum of Colors is called VIBGYOR,
namely Violet, Indigo, Blue, Green, Yellow, Orange and Red, but a human eye can
perceive only six colors.
Explanation:
Answer:
B. Inventing the printing press
Explanation:
Johannes Gutenberg was a German blacksmith, goldsmith, inventor, printer, and publisher who invented the first printing press. The first working printing press was revealed around 1450 in Strasbourg. Before this invention, books were written by hand, which meant that there weren't many examples and that they weren't affordable. The invention of the printing press meant that the production of books became easier and that they became more affordable. Thanks to this, books and literature gained popularity.
