The outcome of the supreme court's dred scott case decided that question 14 options: slaves that lived on free soil after one year were free. slaves could sue for freedom in a federal court. slaves were not citizens, but the property of their owner slaves could purchase freedom after gaining citizenship

The decision effectively stated that states could not be 'free' or a 'slave state' because its unconstitutional for states to exclude slave ownership in territories. The decision also stated that slaves were not citizens, thus could not sue in federal court. The best answer is that slaves were not citizens.

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

d. it adversely affected american productivity