Final answer:
Charles Goodnight is the individual who established the JA Ranch, was a founder of a cattle trail to Wyoming, and bred a new cattle breed by crossing Texas longhorns with Herefords.
Step-by-step explanation:
The person described in the question is Charles Goodnight. Alongside John Adair, he established the JA Ranch in the Texas Panhandle in 1876. Goodnight was also instrumental in the founding of cattle trails, including the Goodnight-Loving Trail which extended from Texas to Wyoming. Moreover, he was known for his innovative approach to cattle breeding, crossing Texas longhorns with Herefords to create a new, hardier breed of cattle. His contributions to ranching and cattle drives were significant in shaping the cattle industry in the United States during the late 19th century.