Answer: pony express
Explanation:
they were the most usefull way
If an important resource, such as oil, becomes unavailable, the production possibilities curve a. shift inwards.
"The production possibility frontier (PPF) is a curve on a graph that depicts the possible amount that can be produced or made of two products, if both are based upon the same limited resource for their creation. The Production Possibility Frontier is also termed as the production possibility curve. If it shifts inwards, it means the economy is shrinking due to a collapse in issuing resources and production capacity."
"The production possibility curve (PPC )is necessary because it helps in indicating the maximum possible production of items , in fixed resources. In macroeconomics, economists study and support a country or other organization's economic activity with its help."
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Answer:
i think its the second one
Explanation:
sorry if im wrong
In 1511 Albuquerque captured Malacca; from this he could control the trade from the East Indies and the coast of China.
The first was walled cities. Another is both offensive and defensive was a fleet of warships. And a third was alliance with other cities.
