The main reason for the wall's construction had always been defense. Since China's first dynasty, the empire faced a near-constant threat of attack from the nomadic tribes to the north. This included those famed Mongols as well as lesser-known groups like the Xiongnu and the Göktürks.
Answer:
Spain
Explanation:
Here's an article going in-depth: https://history.house.gov/Exhibitions-and-Publications/APA/Historical-Essays/Exclusion-and-Empire/The-Philippines/
To be honest I'm not that good at explaining things when it comes to history :)
Answer：
China faces serious social and economic problems associated with overpopulation in the years to come. Overly populated regions lead to degradation of land and resources, pollution, and detrimental living conditions.
During the Renaissance, the economy changed from a bartering economy to a money economy. ... Why was Florence called the cradle of the Renaissance? It was called the cradle because the Renaissance was called a "rebirth" and Florence was the most powerful city in the Renaissance.
