Well,
One of the Union strategies was to control the Mississippi River. At this point in the war, the Union had taken control of the entire Mississippi River minus Vicksburg.
Grant's goal at Vicksburg was to capture it, which would severely weaken the Confederacy, as it was now split in two.
Strain/Sprain: A strain is when a muscle has been pulled to its limit, while a sprain is a muscle twisted or turned excessively.
Heat Exhaustion: Exactly how it sounds like; exhaustion from heat. Basically, it's a heat illness that you may obtain after being in intense heat for a long time.
Imperialism is the intention of one country to rule over another country: for example Great Britain wanted to gain control over India - this is an example of imperialism.
For this land is definitely needed : without a land, there is no "other" land to take over.
I would say that the other necessary aspect is people: the ruling country will need some local population to rule the country, if not only to translate and help them communicate with the local population.
D. Calculating how much income was paid in the previous year
Answer:
The Premack principle
Explanation:
The Premack Principle is the principles which states that when an individual prefer one behaviour to the other such behaviour can be used to reinforce the behaviour they dont like or the less behaviour.
Therefore Premack's principle are often used when a person want to carryout a specific tasks, the person will carry out the ones they don't like or the lesser one in order to get the higher one.
Hence, higher behaviour will often reinforce less behaviour according to PREMACK PRINCIPLE .
Therefore PREMARK PRINCIPLE predicts that the opportunity to do laundry will motivate a person to study.