Oranges are probably the best known citrus fruit and are related to mandarins,lemons,grapefruit,limes and citrons.They're the size and shape of a
tennis ball,with a skin,or rind,of varying thickness.
Probably originated in Southeast Asia oranges were already cultivated in China as far back as 2500 BC.In the late 15th century and the beginnings of the 16th century,Italian and Portuguese merchants brought orange trees in the Mediterranean area.The Spanish introduced the sweet orange in South America and Mexico in the mid-1500s.