Craig Kielburger was motivated to start the organization when he was 12 and read a story about a Pakistani boy who died due to child labor. He decided to create the organization and raise awareness in North America about this problem and how it can be stopped. Now it deals with many more things like education and youth empowerment, not just preventing child labor.
Maine was admitted in 1820, and Missouri in 1821, but no further states were added until 1836, when Arkansas was admitted. From the constitutional standpoint, the Missouri Compromise was important as the example of congressional exclusion of slavery from US territory acquired since the Northwest Ordinance
They were quicker; They eliminated Arab middlemen; They allowed Europeans to get goods more cheaply by going straight to the source.