All of Korea would have been communist and much of what you see today with North Korea would probably have been the state of all Korea had the North won.
It also would have spread communism to a much farther degree and the U.S. would not have South Korea as an ally.
D.Black codes
Step by step:
The correct answer <em>is a Terrace</em>.
A farmer living on the edge of a steep mountain that would like to increase the number of crops he can grow, can build a terrace, one Inca advancement that could be of the most use for him.
The region of the Andes is a place where the tallest and difficult to access mountains exist. However, the Incas developed intelligent ways to harvest crops to take advantage of the steepest areas in the high mountains. They built terraces, cisterns and irrigation canals in the form of “s” or snakes in the slopes to angled down around the hills and mountains. The terraces covered thousands of hectares in ancient Peru, where Incas grew potatoes and corn.
The decisions they make later apply to every similar situation everywhere in the country. For example, there was a case in which students wanted to wear armbands protesting the war, but the school said that was disruptive. The Supreme Court sided with the student, and said they had a right to free speech as long as it wasn’t causing a material interruption. This case would later be the example on how to solve many cases regarding student’s freedom of speech.