Answer:
OPEC can be observed as a trade barrier because it could hypothetically completely exclude a country from trading with countries that produce oil and this would make life much harder for those countries. For example, OPEC introduced an embargo on the US in 70s and there was a huge spike in gas prices and a shortage of fuel.
Explanation:
Answer: the Scientific Revolution.
Explanation:Hope this helps
Nations form alliances in order to achieve goals that otherwise wouldn't be possible. For example, NATO, or the North Atlantic Treaty Organization, a coalition of countries in North America and Europe, agree to defend one another in case of attack from an outside party. This is clearly beneficial, because this intergovernmental support both makes an outside attack less probable, and if it occurs, easier to handle. Another example is NAFTA, or the North American Free Trade Agreement. Shared among Canada, the US, and Mexico, this alliance eradicated trade barriers within these countries. Another beneficial alliance, this agreement increases international trade due to lower costs and thus improves the international economy.
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- Hind
<span>The three most important empires were Ghana, Mali, and Songhai Empire.<span>The Ghana Empire - was located in south of the Sahara desert and northwest of the Niger River in what is now Mauritania and Mali that lasted from the 6th to the 13th century CE.The Mali Empire - empire that lasted from 12th to 16th century. It was the largest empire in West Africa and with its profound cultural influences on West Africa it allows its language, laws and customs to spread along the Niger River.The Songhai Empire - a state that dominated in the 15th and 16th century. It was one of the largest kingdom in African history. Located on the middle reaches of the Niger River in what is now central Mali and extending west to the Atlantic coast and east into Niger and Nigeria.</span>
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