There aren’t any choices here but enlightenment philosophers believed in the power of the individual.
Article iv states that the federal government guarantees each state a REPUBLICAN form of government <span>and shall protect each of them against Invasion; and on Application of the </span>Legislature<span>, or of the Executive (when the </span>Legislature<span> cannot be convened), against domestic Violence.</span>
Building the Berlin Wall, preventing trains from traveling through east Germany. Stopping cars from getting through.
The Civil War was based on a disagreement on slavery, but slavery was not the main issue. The Union opposed the South's economic system (slavery) and the South was not too happy about that so they began seceding from the Union. President Lincoln's main goal was to preserve the Union and to get the Southern states to come back. Slavery was just something that had gotten taken care of during the Civil War.
I would say 30,000 cause all the next developments were from the 1860's forward and that is when huge growth happened, after 1860.