These small inventions, the villagers say, have made many differences.
His invention, a huge success for Fossil, makes watch faces change color.
Along with trade, new scientific discoveries and inventions made their way east or west.
The invention of printing made it possible to produce them in great numbers.
This invention gradually made books less expensive to produce, and more widely available.
Many farmers grew some tobacco, and the invention of the cigarette made the product especially popular.
Some recent inventions could make all their lives easier.
Unfortunately, this new invention makes it difficult for a grandmother to figure out just how much milk the baby has swallowed.
Gutenberg's invention made mass production of texts possible for the first time.
It covers the new discoveries and invention made by scientist all over the world.
