The young state began to show its first signs of improving beyond a frontier wilderness in the 1850s. The growing need for cotton gave many Arkansans an avenue to become involved in market economy for the first time, a transition that made the state significantly more prosperous. At the time, the most efficient way to grow cotton was a plantation-style system, and this quickly became the norm in the southeast part of Arkansas. During the late antebellum period, most Arkansans were identified with farming and ranching. Fewer worked as carpenters, blacksmiths, gunsmiths, and wagon builders and fewer still as lawyers, doctors, and teachers. This economic shift also allowed some Arkansans to work outside the factory or field as artisans, including James Black who is credited with creating the first Bowie Knife in Arkansas during the period. Improving transportation also helped the state's economy grow. The Southwest Trail and Butterfield Overland Mail were major roads in the state, and steamboats began using the state's rivers for commerce. Arkansas increased its cotton production from in 1840 to in 1850. Arkansas and the southeast grew rapidly due to cotton, but its use of the plantation system would ultimately set the state and region behind the rest of the nation for decades. Southeast Arkansas became significantly more prosperous than the northwestern highlands, causing a rift to form between the two regions.