Ask: Why are boundaries important?
Step 1: To go the ArcGIS Online map, Borders, Boundaries, and Barriers, and explore the map.
Step 2: Zoom and pan the map to see the entire world.
- Political boundaries exist to divide the land and establish territory. What types of boundaries are on the earth?
Acquire: What are examples of the different types of boundaries on the earth?
Step 3: With the Details button underlined, click the button, Show Contents of Map (Content).
Step 4: Check the box to the left of the layer name, World Administrative Divisions.
Step 5: Zoom in to the continent of Europe.
- What types of boundaries can be seen?
Step 6: Click a few administrative units to view the data.
Step 7: Hover the mouse over the layer name, World Administrative Divisions. Click the three dots and select the option, Transparency. Set the transparency of the layer to 50 percent.
- Where do you see geometric boundaries?
- Where do you see physical boundaries?
Explore: Are borders just boundaries?
- Disputed boundaries are often shown with dotted lines or notes on the map itself. On which boundaries do countries disagree?
Step 8: Filter the data in the World Administrative Divisions layer.
Step 9: Build the following query from the drop-down lists: Disputed Is 1. Ensure that Unique is chosen for the third drop-down list.
Step 10: Click Apply Filter. If results do not appear, ensure that the map is zoomed in enough that the layer name appears in the dark text.
- What changed on the map?
- Most disputed boundaries occur because of political and social instability, territorial disputes, and natural resource disputes. Where are most of the disputed boundaries of the world located?
Step 11: Turn off the layer, World Administrative Divisions.
Analyze: What other types of boundaries exist on the earth?
Step 12: Click the button, Basemap. Select the basemap, Imagery with Labels.
Step 13: Click the button, Bookmark. Select the Great Wall of China.
- What barrier do you see? This barrier was used to slow invading northern armies.
Step 14: Click the Republic of Chile bookmark.
- What type of border can be found here?
Step 15: Observe the border of Chile with Peru, Bolivia, and Argentina.
- What are the advantages and disadvantages of this border?
Step 16: Click the North and South Korea bookmark.
- What type of boundary is between these two countries?
Act: How can borders change?
Step 17: Investigate the boundary of Western Sahara and Morocco. If Morocco controlled the region, conflict from the increased territory would occur.
- What natural, cultural, or political factors can affect boundaries.
- How have trade and globalization affected borders and boundaries of countries around the world?