Explanation:
. The forced-draught (bellows-operated) shaft furnace known from archaeological studies is usually regarded as the pinnacle of this early smelting technology1-3. Examples of natural-draught furnaces, in which gas buoyancy in a shaft of sufficient height induces a draught adequate to drive the smelting process4, are also known, but are generally regarded as disappointingly inefficient by comparison5. Here I report the discovery and excavation at Samanalawewa, Sri Lanka, of a previously unknown furnace type. The furnaces are all situated on the western margins of hills and ridges, where they are exposed to the strong monsoon winds. Field trials using replica furnaces confirm that this furnace type uses a wind-based air-supply principle that is distinct from either forced or natural draught, and show also that it is capable of producing high-carbon steel. This technology sustained a major industry in this area during the first millennium AD, and
Answer:
Why were many African American farmers caught in a condition of debt peonage? They did not have enough money to pay for for supplies from the company store. ... Farmers worked land owned by others.
This information isn't specific to those over age 18, but perhaps will still be helpful to you. The US Census Bureau published a report based on 2012 information, <span><em>English-Speaking Ability of the Foreign-Born Population in the United States: 2012</em>. According to that report, 4</span><span>4 percent of the foreign-born population <u>age 5 and older</u> who came to the United States in 2000 or later said that they had high speaking ability in English, saying they spoke English very well, some indicating that they spoke only English at home. Only 13% said they did not speak English at all.</span>
Which of MacCurrie's statements best summarizes his opinion of Prohibition? "Accomplished nothin' and did a lot of harm."