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:
Altitude and relief features.
Explanation:
- In Ethiopia, the climate changes mostly with altitudes and stays from hot to arid and to cool in plateaus. As t located near the equator, the country has variations in climate throughout the year.
- There exist various plateaus such as Ethiopian highland and mountainous ranges in the country which is responsible for the different climate of the places.
Less subject to modification than the clothing weapons <span />
Explanation:
Urban regeneration projects are those with the aim of renovating an urban space through the reconstruction and revitalization of old buildings and the entire infrastructure of the city, especially historic cities, such as Portugal for example, where there is a decree that institutes regeneration as a way of bringing benefits to people and the environment, such as greater safety, greater innovation and modernity, more technological means of transport, greater environmental protection, greater leisure capacity, infrastructure, etc.
The biggest doubling time of all the regions/continents in the world has Europe.
Europe is the only continent that has almost 0% population growth (as of 2014), which practically means that with this pace Europe will need an eternity to be able to double its population, so it makes it the continent with the biggest time needed to double it's population.
