The establishment of settlement houses in poor urban areas
March 1, 1803-Ohio December 11, 1816-Indiana <span>December 3, 1818-Illinois</span>
Yes, he did. Henry Clay put in place the Missouri Compromise where people in the Louisiana Territory (which included Kansas and Nebraska) were able to choose whether or not they wanted to own slaves or not, so by popular sovereignty. This was because these states were not part of the Union nor were they part of the Confederacy and some states were very divided on whether it was right to own slaves or not.
Confounding variables are stimuli other than independent variables that may affect the outcome of the study and lead to erroneous conclusions. These variables become a factor when researchers are unable to prevent or eliminate them. These variables can make the results found during experiments invalid because they do not reflect the original variables in the experiment or research.