Describe the types of lines and arrows used on the map and what they might represent.

Map Line Types and Arrows:

• Solid Black Lines with Arrows: These likely represent the main routes of exploration or voyages taken during the XVII-XX centuries. The arrows indicate the direction of travel.
• Dashed Blue Lines with Arrows: These could indicate secondary routes, trade routes, or perhaps routes of discovery from a different period or by different explorers than those shown with black lines. The arrows again show the direction of travel.
• Dashed Grey Lines: These might represent boundaries, currents, or perhaps projected or intended routes rather than actual completed voyages.
• Circles along some routes: These could signify significant points, such as ports of call, discoveries, or landmarks.