Answer:
HIV crossed from chimps to humans in the 1920s in what is now the Democratic Republic of Congo. This was probably as a result of chimps carrying the Simian Immunodeficiency Virus (SIV), a virus closely related to HIV, being hunted and eaten by people living in the area
Explanation:
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<span>One of the main tools used by Ivan III was his trickery in the diplomatic process by forging treaties he had no intention on keeping. He arranged a very important marriage to Sophia that forged his claim to the throne. He also used diplomacy to weaken the mongols in the west and in the east.</span>
The correct answer is: "the demand curve will shift to the right".
Households are the economic agents whose will defines the demand curve. This curve represents combinations of prices and amounts demanded by them. In the case, the income has increased for all households within a market, the demand curve shifts right, which means that quantity component of all combinations has increased, and that at the same price more amount of the good is demanded by the consumers.
Such a shift is represented in the graph attached.