Answer:
A unique area of land with a population and physical features
Black powder because without it, we'd have no guns/canons to use as weapons.
Trade barriers come in many forms. Quota is one. This is when a country sets a limit to the imported products. This is done for a number of reasons. One is because the government of the importing country wants to protect its domestic manufacturers. Other barriers or limitations are added costs such as tariffs, duties, and taxes.
Answer:
Simply said, the European states never had the intention to help the Romans, nor were they close to them in any way - not culturally, not intellectually, historically, not even religiously. On the contrary, for most of their coexistence, the Europeans dreamed to conquer and loot Constantinople themselves.
Explanation: