GIVAWAY MIGHT WANNA ANSWER
WRONG ANSWERS ONLY WHAT A COW?

Tropical climate is experienced in the nothern countries of south america

It is useful for historians to write narratives so that history can be passed on from their point of view.  think about a story being told in third person, then think about it again being told in first person, by someone who actually experienced the event.

Largely uneconomic because they provide little profit or food surplusi think so

Ithink its b but i'm not sure.