Take a guess how old chocolate is, if you guess quite new, you would be surprised. Chocolate is said to have originated 4000 years ago in the Amazon and Sou then American cultures. Chocolate was known by the Mayan name of acahuaquchtl meaning Tree and the word xocoatl meaning bitter water. Chocolate at first was not the sweet thing we have today, It was found in the form of a very bitter drink, that the Mayans and Aztec's drank to celebrate different feast and celebrations, this drink though bitter itself, was often topped with different spices and herbs to give a bit more a spicy/bitter taste.
The next step in history for chocolate is when it first was transported from South America to Europe, where Christopher Columbus first presented the brown beans that were caoco beans where only given a small mention and largely overlooked by King Ferdiand and Queen Isabella and where was porperly looked at when Columbus discovered in the now what is called Nicaragua that the beans were used as a form of currency
The drink itself when discovered as parietal remains in jars found around both civilization, first sparked off the idea of of making it the hot sweet drink we have today but this is skipping alot of history and to find the best timeline take a look over here: http://www.chocolatemonthclub.com/chocolatehistory.htm ((Citation 2, Electronic Resourse of historical information))