Helianthus annuus
In the Eastern Woodlands, early peoples independently invented agricultural and by 1800 BCE developed the crops of the Eastern Agricultural Complex, which include squash ("Cucurbita pepo ssp. ovifera"), sunflower ("Helianthus annuus var. macrocarpus"), goosefoot ("Chenopodium berlandieri"), and marsh elder ("Iva annua var. macrocarpa").