Question: What countries found their economic growth in the period young boys were employed in the glass making industries?

Knowledge 1: Child labour
In the early 20th century, thousands of boys were employed in glass making industries. Glass making was a dangerous and tough job especially without the current technologies. The process of making glass includes intense heat to melt glass (3133 °F). When the boys are at work, they are exposed to this heat. This could cause eye trouble, lung ailments, heat exhaustion, cut, and burns. Since workers were paid by the piece, they had to work productively for hours without a break. Since furnaces had to be constantly burning, there were night shifts from 5:00 pm to 3:00 am. Many factory owners preferred boys under 16 years of age. [SEP] Knowledge 2: Great power
Over time, the relative power of these five nations fluctuated, which by the dawn of the 20th century had served to create an entirely different balance of power. Some, such as the United Kingdom and Prussia (as the founder of the newly formed German state), experienced continued economic growth and political power. Others, such as Russia and Austria-Hungary, stagnated. At the same time, other states were emerging and expanding in power, largely through the process of industrialization. These countries seeking to attain great power status were: Italy after the Risorgimento, Japan after the Meiji Restoration, and the United States after its civil war. By the dawn of the 20th century, the balance of world power had changed substantially since the Congress of Vienna. The Eight-Nation Alliance was a belligerent alliance of eight nations against the Boxer Rebellion in China. It formed in 1900 and consisted of the five Congress powers plus Italy, Japan, and the United States, representing the great powers at the beginning of 20th century.
Knowledge 1: Child labour
In the early 20th century, thousands of boys were employed in glass making industries. Glass making was a dangerous and tough job especially without the current technologies. The process of making glass includes intense heat to melt glass (3133 °F). When the boys are at work, they are exposed to this heat. This could cause eye trouble, lung ailments, heat exhaustion, cut, and burns. Since workers were paid by the piece, they had to work productively for hours without a break. Since furnaces had to be constantly burning, there were night shifts from 5:00 pm to 3:00 am. Many factory owners preferred boys under 16 years of age. [SEP] Knowledge 2: Dammam
To encourage the growth of non-oil industries, an industrial city was established in the open space between the three cities. Now home to more than 124 factories, the industrial complex is completely engulfed by an urban mass. As a result, a second industrial city was established further away from the Dammam Area along the highway to Riyadh. Located on nearly 6,000 acres (24 km2) of land, the Second Industrial City is already home to 120 factories, with 160 others under construction. These plants manufacture a variety of consumer and industrial products that are marketed throughout the Kingdom and are exported to other countries around the world. Handling such exports, as well as imports from abroad, is the domain of shipping agents and commercial companies located in Dammam and Al-Khobar, making the Dammam Area not only a major oil producing and exporting area, but also a commercial and shipping center.
Knowledge 1: Child labour
In the early 20th century, thousands of boys were employed in glass making industries. Glass making was a dangerous and tough job especially without the current technologies. The process of making glass includes intense heat to melt glass (3133 °F). When the boys are at work, they are exposed to this heat. This could cause eye trouble, lung ailments, heat exhaustion, cut, and burns. Since workers were paid by the piece, they had to work productively for hours without a break. Since furnaces had to be constantly burning, there were night shifts from 5:00 pm to 3:00 am. Many factory owners preferred boys under 16 years of age. [SEP] Knowledge 2: Botswana
Since independence, Botswana has had one of the fastest growth rates in per capita income in the world. Botswana has transformed itself from one of the poorest countries in the world to an upper middle-income country. Although Botswana was resource-abundant, a good institutional framework allowed the country to reinvest resource-income in order to generate stable future income. By one estimate, it has the fourth highest gross national income at purchasing power parity in Africa, giving it a standard of living around that of Mexico.The Ministry of Trade and Industry of Botswana is responsible for promoting business development throughout the country. According to the International Monetary Fund, economic growth averaged over 9% per year from 1966 to 1999. Botswana has a high level of economic freedom compared to other African countries. The government has maintained a sound fiscal policy, despite consecutive budget deficits in 2002 and 2003, and a negligible level of foreign debt. It earned the highest sovereign credit rating in Africa and has stockpiled foreign exchange reserves (over $7 billion in 2005/2006) amounting to almost two and a half years of current imports.

Answer: United Kingdom and Prussia