Answer:
cindia hope help you stay happy
um so im not sure what the answer is cos im doing the same test rn but the question is asking for your opinion on what u think it means so they probably wont count it as incorrect as long as its on topic and makes sense :)
The answer to this question is 4. Industrialization caused urbanization and a population boom.
The Song Dynasty was first civilization in the world to use banknotes, aka paper money. They also were the first to use gunpowder, and the first to make a permanent navy. They were also the first to discern the North using a true compass. They had many, many firsts, which helped develop the world into how it is today.
Sorry, that this is only one half of your answer. But, I hope this still helps.
