Answer:
1) It helps economists tell the function of an economy 2) These are easier for producers to find more of, and therefore makes the resources more available and affordable to consumers
Explanation:
There honestly isn't an explanation to these, it's just simply how things work :P
The correct option is D.
The statements in the excerpt of the March of the flag can be considered a biased source because no supporting reasons were given for the opinions presented. There is no reference whatsoever to any other widely accepted source of information which buttress the points offered by Senator Albert.
They built palisades and moats.
hoped this helped