The Old Southwest:

a. included Texas, Arizona, New Mexico, and Utah.
b. attracted thousands of settlers in the 1820s and 1830s with its low land prices and suitability for cotton production.
c. attracted nearly twice as many female as male settlers in the early years.
d. soon boasted the nation's highest standards of public education.
e. was a promised land for slaves because of superior work conditions.

B. attracted thousands of settlers in the 1820s and 1830s with its low land prices and suitability for cotton production.

Explanation:The "old southwest" is an Eighteenth century term used to informally describe the territory of the United States of America which eventually formed the states of Missouri, Mississippi, Arkansas, Alabama, Louisiana, Texas, and parts of Tennessee, Kentucky, and Florida.

During the early Eighteenth century, the "old southwest" of the United States of America attracted migrants especially due to favourable climatic conditions of the region which favoured Commodity Agriculture.

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the correct answer is d

a conference committee is a group of congress representatives appointed by the senate and the house to reach an agreement over a bill that had different versions in each chamber. this is due to the fact that, to pass a law. both the house and the senate must agree on the exact same content and wording of the bill to present it to the president.