Businesses compete in a free enterprise system because these systems exist in a capitalist environment, wherein the company with the "best idea" or product makes the sale and thus a profit--thus fostering competition.
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Answer:
a porch or walkway attached to a building.
Explanation:
The separate dimensions of the structure shows that it must be a structure of some sort.
machines
communication
transportation
new energy sources
increase use of metals and minerals
yes there is