The common feature which all Central American countries have in common is canal systems. This is rooted from the fact that C<span>entral American countries had a poor internal communication translating to the economic activities and posiitive feedback. There are even existing projects today like the dry canal project.</span>
Answer:
Passive solar houses.
Explanation:
Passive solar technology is the set of techniques aimed at the use of solar energy directly, without transforming it into another type of energy, for immediate use or for storage without the need for mechanical systems or external energy input, although it can be complemented by them, for example for their regulation.
Passive solar homes work best with open floor plans--reduced partitions from main rooms to minor rooms-- to facilitate the thermosiphing movement of solar heat from the south side through the rest of the house.
The interior surfaces that the sunlight falls upon are high density (thermal mass) materials, such as concrete, brick, stone, or adobe.
Rising heat wave on the south side of the building naturally heats up the roof terrace work areas and south facing sleeping rooms during winter.
Contacts between sedentary and nomad peoples<span> resulted in trade, tribute payments</span>
<span>scarcity exsist becaues our needs
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