Tomato is a very strange fruit, or vegetable. Which one is it again? 
It's actually a fruit. A fruit that of course is edible and red, called the "Solanum lycopersicum".
What a confusing genus species name. Do you happen to know when it was first domesticated/harvested?
Well, the Spanish found it when they interacted with the Aztecs, when the Spanish colonies of America. This led them to bring it to Europe in the 16th century!