Answer:
Bessemer had been trying to reduce the cost of steel-making for military ordnance, and developed his system for blowing air through molten pig iron to remove the impurities. ... This made steel easier, quicker and cheaper to manufacture, and revolutionized structural engineering.
Explanation:
Answer:
C
Explanation:
Density is equal to the ratio of mass and volume. Mass is the amount of matter or substance of a body and volume is the space occupied by it. Density is the unit amount of matter or substance contained in unit volume.
<span>False. Stonehenges are prehistoric monuments made of stones and they are found in Wiltshire, England. They are circular earth banks and ditches dating back to 3,100 BC. Debates are still on-going as to what the exact purposes of stonehenge were to the civilization that existed before and how they even constructed these massive stones into place.<span>
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Answer:
<em>Jose de San Martin</em> is the correct answer.
Explanation:
Jose de San Martin was the Argentine general who successfully led the independence movement of South American nations from spain. San Martin and Simon Bolivar are considered as the liberators of south America. He is worshipped as a national hero in Argentina. He worked as as lieutenant in the Spanish army and fought for them in African colonies. In 1812 he came back to Argentina and offered his services to the revolutionary forces. He captured Lima on 9th July 1821 and declared its independence on 9 December 1824.
