Linked from
The 6 pages that link to Bean (food), each with the reason it gives.
Aztec agricultureRelated: Beans supplied protein and were often cultivated alongside maize.
ChinampaRelated: Beans were grown alongside other staple crops in central Mexican farming systems.
Kidney beanNarrower topic: Kidney beans are one specific kind of bean.
Pinto beanNarrower topic: Pinto is one familiar kind of edible bean.