The How did that get here series introduces  children to the history and geography of  some of our most commonly-used commodities. Readers will learn how the seed of the cocao plant becomes a chocolate bar sold at the corner store or why the search for exotic spices led to the discovery of North America. The books begin with a description and explanation of the plant that became a commodity and follow through with the biology, ecology, geography, and history to discover:  
•  what a commodity is and its relationship to our modern economy 
•  Who grows the plants that become commodities and who makes and sells the final products 
•  Why some plants changed the history of the world