<span>A basic assumption of economics is rational self-interest.
Answer: B</span>
Military invasions is the answer
Among women who are depressed in widowhood,<u> financial strain </u>appears to be the biggest burden.
While the death of a spouse is emotionally devastating and can affect family finances particularly if the spouse is the breadwinner, women more than men are found to be especially affected.
One reason is that in a heterosexual marriage, the husband tends to be the main income earner. Studies have found that the household income for widows decline by about 37 percent after the death of her spouse. The assets of widows also tend to decline more than widowers.
Often, wives have been less involved in managing family finances, filing taxes, dealing with life insurance policies, etc. and some do not even have their own accounts. This restricts their financial independence if they enter widowhood.
To learn more about challenges of widowhood: brainly.com/question/9888519
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The system of feudalism needed a lot of workers, who were tied to the land, and had to deliver a part of their harvest to their lords. The farmers generally had a poor life and struggled to make enough both for themselves and for the lords, but the lords benefited from this, as they had many farmers paying them a part of their harvest
Before the plague, the land was scarce, but people plenty, which meant that the farmers could not set conditions on their work. After the plague the number of farmers decreased, and there was a lot of work needed, so the farmers could search for a different place to work, if the feudal lords were demanding too much,.
<span>the appropriate amount of time for a teacher to pause after asking a question before restating the question or moving on is: 3 seconds
Most teachers only wait for about 1.4 question after asking a question before moving on. In most cases, a student who wanted to ask a question need more time to reframe the sentence in his/her head and if the teacher moved on too quickly, that teacher will discourage the student from asking the question.</span>
