A large active duty military force is a feature in certain
countries. Maintaining an active military force is dependent on factors such as
political will, magnitude of perceived external threats, and availability of
up-to-date military technology. Despite the expense of maintaining an active
military outfit, those are the good reasons why relatively low GDP nations like
India, China, North Korea, Pakistan, Vietnam and Myanmar are able to maintain
high scores in terms of active military personnel.
I believe all of the anwers apply.
The 'fewer natural resources" is applicable assuming they are currently depleting their natural resources.
One reason that rock layers are not horizontal are because of erosion and it also depends we’re you find the rock layer
