Erosion. Erosion causes gaps in rock layers after a long period of time.
<span>After the rule of Ramses II, Egypt’s government collapsed. Rival leaders in different cities were so busy fighting one another that they forgot about maintaining Egypt’s control of Kush. This was a costly oversight. Left on its own, Kush became an independent kingdom ruled by Nubian kings.</span>
It could have pros because it may be a better technique, and helps you get more of what you want, but it could also have cons, because it could give back less than what you got with the other technique. This is like if you have a job filing paperwork, and you have a good technique or tool to help you along quickly, but you decide to try something new, and end up being able to get things done faster. However, you might decide to change your techniques again, and you may find that it gets things done much slower. Hope this helps.
Answer: prosperity
The economy of Australia is characterized not only by high unemployment rate, low unemployment rate nor foreign subsidies but by prosperity. The economic prosperity enjoyed by Australia is due to the high industrialization of the country and its modern technologies.
I think (A) but let someone double check
