Answer:
reciprocity in the exchange of goods and services, associated with bands or tribes
Explanation:
The labor supply increased
The correct answer to your question would be Nigeria.
The country of Nigeria has a federal governmental system, the same as the United States of America. While the Nigerian population suffered through different civil wars, it is nonetheless true that their governmental system is generally the same.
The answer is letter C. because the lava is so hot it can it can make valleys tell me if im wrong id like to know