Answer:
Today, the existing Communist states in the world are in China, Cuba, Laos and Vietnam.
Explanation:
If not for Sacagawea, they most likely would have gotten lost or injured and not have been able to complete their goal.
The crisis set the stage for the battle between Unionism and state's rights, which eventually led to the Civil War. The Nullification Crisis also stalled the agenda of President Jackson's second term and led to the formation of the Whig Party and the Second American Party System.
Trade barriers restrict or reduce international trade which reduces international cooperation among states and the overall interdependence. For example, if you rely on another country to buy cocoa and they rely on you to get sugar, if you enact trade barriers, you won't get cocoa and they won't get sugar which will be a huge problem for both industries in both countries because you depend on each other.
