Answer:
3. Countries with mild climates produce their own needs and are less likely to trade.
Explanation:
Logically speaking, a country with a more agricultrually friendly climate would have less need to trade for food and resources from other countries, provided exploitation is not a part of the equation.
The Huns were<em> nomads</em> who lived in Central Asia, Caucasus and Eastern Europe,<em> they contributed to the fall of the Western Roman Empire because they started the</em> Mass Migration.
The mass migration was a main factor on the Western Roman Empire because<em> it weakened the Roman Empire's cultural, economic and military development</em>, leaving them exposed for other countries to attack.
The Hun invasion<u> </u><u>caused a massive migration</u>, they moved <em>The Goths</em> from their homes causing <em><u>the Goth invasion of the Roman Empire</u></em>. This is known as the <em>Domino Effect</em> in the fall of the Western Roman Empire.
It got much bigger and the air quality got better.
