What is meant by popular sovereignty undermining the missouri compromise

From this passage, it is clear that president jackson believes the second bank of the united states

Many scandinavians immigrated to the united states as a result of the homestead act of 1862, which offered land to independent farmers. this is an example of a push factor, because turmoil in scandinavia encouraged people to leave. push factor, because a new opportunity encouraged people to come to the us. pull factor, because turmoil in scandinavia encouraged people to leave. pull factor, because a new opportunity encouraged people to come to the us.

From 1990 to 2008, by what percent did the world’s most developed economies cut their greenhouse gas emissions?