Briefly describe the concept of "open range"

Write the title date and stated purpose of the map you have chosen to describe what you learn from your careful review of the maps information. picture above

What will not cause political parties to change or develop

How would high tariffs hurt america? a. fewer immigrants would be able to move to america b. sales of american products to other countries would go down c. americans would sell more goods to other countries d. goods imported from other countries would cost less