I would also say C. movement of people to urban areas is the correct answer.
Industrialization meant that the country was becoming more and more technologically advanced. There were new factories, which meant there were new job positions. So obviously people wanted to come to the city in order to pursue a career.
Answer:
Riddles were originally a form of oral literature, rather than written down, so think of how the riddle sounds when you say it. Try not to bog down your riddle with elaborate words or abstract concepts.
Answer:
The large number of groups could lead to ethnic tensions.
Explanation: