Karangan manjelang hari kartini means 'Authorship ahead of the kartini' in the Indonesian language.
The answer is - droughts.
The region in which the Maya civilization existed, even though in general had a stable climate throughout the year, occasionally, on every few years, was experiencing a long drought. The droughts in this period of time could have been fatal because they were destroying much of the plants that were providing food for the people, and also lack of freshwater. So the Maya came out with a smart method, they started to build cisterns, and when there was rain the cisterns were filled with water that can be used later on when there's crises for it.
Answer: What is particularly unique about the United States middle class?
b. It is broken into two subcategories: upper and lower middle class.
Explanation: The unique thing about United States middle class is that it comprises of both lower and upper middle class which are:
1. The lower middle class is often made up of less educated people with lower incomes, such as managers, small business owners, teachers, and secretaries.
2. The upper middle class is often made up of highly educated business and professional people with high incomes, such as doctors, lawyers, stockbrokers, and CEOs.
