In the beginning of the 1930's though the NAACP's legal Defence and education fund began to turn to the courts to try to make progress in over coming legally sanctioned discrimination from 1935 to 1938 the legal arm of the NAACP was headed by Charles Hamilton Houston
It could mean many things but the most common explanation is to own up to your mistakes. to not walk around looking for someone else to blame. It depends on how it's used in context though.
It was the "<span>(2) terrorist actions on September 11, 2001" that George W. Bush was referring to when making this speech. He was not in office as president during the others except for (4). </span>
American settlers continue to spread to the west and took land from Native Americans. As expansion continued, agreements were signed and they were broken with native americans losing their homes and land and force to move west. As Native Americans were forced to more to the west, they are not able to adopt to the environment they are moving to, so they died due to lack of food or diseases.