Answer:Shipping low-yield crops great distances
Imagine a very large town in the center of a uniformly fertile plain; an isotropic space. Beyond the fertile space extends a desert that isolates the town from the rest of the world. There are no other populations. The only market buys all the agricultural production of the region, and is transported by the shortest route (a straight line).
In these conditions all men behave similarly in economic matters, that is, they have the same needs and abilities, produce equally and have a total knowledge of space and rationally conducts to achieve maximum performance, is the economic man. The differences in the cost of transport are taken into account depending on the distance, the quantity and the perishability of the merchandise.
Explanation:
pls mark brainliest
Answer: He created the Centers for Disease Control to study the disease.
Explanation:
The settlement of the Americas is widely accepted to have begun when Paleolithic hunter-gatherers entered North America from the North Asian Mammoth steppe via the Beringia land bridge, which had formed between northeastern Siberia and western Alaska due to the lowering of sea level during the Last Glacial Maximum
"Communism" was not a change in policy created by Gorbachev.
<u>Answer:</u> Option D
<u>Explanation:</u>
A Russian, former Soviet politician, 8th, last leader of the Soviet Union, positioned the general secretary of its communist party from the period 1985 - 1991 popular known as "Mikhail S. Gorbachev".
Understanding the historical and more recent relevance of the world in 1986, Mikhail Gorbachev and his advisers embraced "glasnost" as a political slogan along with the elusive "perestroika".
Glasnost has been taken as factor for increased lack of secrecy and transparency in Soviet Union government entities and activities. Therefore communism was not a variation in policy established by M.S. Gorbachev.