Answer:
because the sun and moon exist
Explanation:
The answer to this question can be quite subjective. Some people will say that the telephone is the most important invention, or the automobile, or the plane, but for me personally, I'd choose antibiotics.
It is a modern-day invention (as opposed to the Middle Ages, for example) which changed our lives for the better. Before penicillin was discovered in the 1920s by Alexander Fleming, people were constantly dying because of most harmless diseases. But after antibiotics were invented, people were given a chance to recover from their illnesses much more easily.
In ______ Solon was chosen as an Athenian statesman with reformation powers.
594 B.C
The way that camels help increase trade across geographic barriers of northern Africa is : Camels helped with transportation.
Back
then, we still have not developed machine based transportation
vehicles, so we rely on ships and carts. Since the horses are unable to
cross pass the desert, most of the animals that is used on northern
Africa trade were camels.