Which of the following statements is false?
a.
as a result of the dred scott decision, northerners who had been undecided or unconcerned about slavery were now actively against it.
b.
as a result of the dred scott decision, southerners felt they could overturn slavery bans across the union.
c.
as a result of the dred scott decision, the republican party grew more popular.
d.
as a result of the dred scott decision, the union grew stronger.

a.

As a result of the Dred Scott decision, Northerners who had been undecided or unconcerned about slavery were now actively against it.

Explanation:

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president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers

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