Answer: The tariff helped to increase Nationalism and helped the economy because it protected American goods of foreign competition and the US could buy cheaper products.
The answer is true because each of the photographs were one of a kind !
The doctrine of popular sovereignty was used. That meant that people in those states could choose to vote to support slavery and since they were majority then slavery would be permitted. There were even states that were at first non-slave states but then things changed and they voted to introduce slavery into the state and people voted for this and supported this.
Two new states were added by the year 1821. Maine was added as a free state and Missouri was added as a slave state
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