Answer:
They have a shared economy.
They allow easy migration
He accomplished several things such as leading an expedition to explore the strait of megallan.
Answer:
Overlay is a GIS operation that superimposes multiple data sets (representing different themes) together for the purpose of identifying relationships between them.[2]. An overlay creates a composite map by combining the geometry and attributes of the input data sets. Tools are available in most GIS software for overlaying both Vector or raster data.
Explanation:
Before the use of computers, a similar effect was develioped by Ian McHarg and others by drawing maps of the same area at the same scale on clear plastic and actually laying them on top of each other.
Alaska (USA) in west, 12 US states of the continental United States in south, Greenland (an autonomous country within the Kingdom of Denmark), and Saint Pierre and Miquelon (an island which belongs to France).