<span>If we are talking about Andrew Carnegie, he made a his fortune in the American Steel industry. During the early 19th century, he was a pioneer in expanding the industrial steel industry. He is considered one of the richest people.</span>
<span>There has been so many explanations for the great depression which began in the United States and swept across other industrialised countries; but a major fall in stock price seems to be the one single explanation that has stood the test of time. In the 1920s the U.S. stock market experienced a rapid expansion, reaching its zenith in August 1929. Stock prices began to decline in September and early October, but the fall began Oct. 18. Panic set in, and on October 24, a record 12,894,650 shares were traded. Investment companies and leading bankers attempted to stabilize the market by purchasing great blocks of stock; they were trying to mitigate the steep decline. However, on Monday, the storm broke loose, and the market went into a free fall. The great depression was the longest, deepest, and most widespread depression of the 20th century.</span>
It is said that not only the ancient Mesopotamians but the entire civilisation taking place during the prehistoric era believed in the idea that the Gods created the humans in order to serve them. One of the most famous Gods among the ancient Mesopotamian culture were the entities Anu, which is the god of heaven, and Enlil, which is the god of air.
Answer:
A control should have been included in the investigation
Explanation:
It is impossible for the student to interpret a correct conclusion about his experiment, without adding a control treatment where he can really compare the differences between the variables.
Control treatment is an element of research that receives all factors, except the variable being tested. The control serves to make comparisons with the other treatments, allowing to observe the exact difference between a system where the variable was tested and the system where it was not.
In the case of the question above, it would have been necessary for the student to have placed a cart on a ramp of normal height and without sandpaper. That way he could compare the speed between this cart and the carts on the other ramps, thus having a correct result.
People found life more convenient, as these inventions gave them more opportunities and freedoms.
People became frustrated, as the expense of these inventions put them out of reach of most consumers. People rejected these inventions, preferring to do things as they had been done in the past.
