Answer:
teach visitors to recycle
Explanation:
Both of them are the most important cities in their countries. They are capitals and cultural, demographic and industrial centres.
Tariff reduction is the the reduction of taxes on an item being shipped to another country. The answer is the last one. Birth and death rate directly causes population growth or decline. Migration can help people thrive in an environment which means more population. I hope this helps!
They can maintain a government. They get raided by neighboring countries. They have ridiculous resources... Which is why they were constantly colonized. D is my answer.
The Gobi Desert is surrounded by mountains on one side and China on its southern border Hope this has helped :)
