In the South, ( ) was the main waterway to transport cotton to the port city of New Orleans. ( ) further improved transportation on this waterway. first parentheses 1. the Eerie Canal 2. the Rio Grande 3. the Mississippi River
Second parentheses 1.The addition of railroads 2.The increased number of ports 3.The introduction of steamboats

The Mississippi

Explanation:

Cotton was the city's most lucrative export, bringing in $220 million into the city by 1840, and many factors made New Orleans a logical exporter.

1. The Mississippi river 2. the introduction of steamboats

Explanation:

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