[["In 1493, on Columbus' second voyage to the Americas, Spanish horses, representing E. caballus, were brought back to North America, first in the Virgin Islands, and, in 1519, they were reintroduced on the continent, in modern-day Mexico, from where they radiated throughout the American Great Plains.", 18.0], ["Horses in north america migrated from some parts of Canada. Data collected from carbon dating has found fossils as far back as 12,000 years ago in Americas great plains.", 9.0]]
when did horses arrive in the united states
history,horses