What permitted transportation in the early years of the United States? Erie Canal Mississippi–Missouri River System Pony Express Transcontinental Highway

Mississippi-Missouri River System

Explanation:

The transportation on Mississippi–Missouri River System started around the early period 1800s with the use of Steam Boats. It spans across 5,969 km long.

Erie canal first use was in 1821

Pony Express was a mail service

Transcontinental Highway in America first became operational in 1954

Hence, in this case, the correct answer is Mississippi-Missouri River System

use this site

disorders of the brain include both behavior disorders and other psychiatric illnesses. the primary difference between a behavior disorder and another type of psychiatric disorder is the presence of choice. psychiatric conditions are considered to be involuntary while in behavior disorders, choices are essential.