What can culture tell us about a region?

There are traits like blood type and eye color, and others like speaking english or having a scar. what are the terms used to describe these different types of traits? how are each defined?

How would having more railroad tracks be advantageous during a war

The map shows the allied strategy in the pacific. what does the movement of allied troops reveal about their strategy? the allies’ objective was to reach japan as soon as possible. the allies kept getting diverted in their quest to reach japan. the allies overtook outlying islands to make access to japan easier. the allies retreated just before they reached the first set of islands.