A vassal was paid for past services.....
Answer:
B, Hydraulic Mining.
Explanation:
This is a rare type of mining that uses high pressure of water to move rock sediments.
This type of mining is used in mining for kaolin, coal, tin or gold. The water here is used to remove whatever is been mined.
George Washington is wearing Greek draperies and this statement best explains why American tastes found it difficult to appreciate Horatio Greenough's sculpture of George Washington. The correct option among all the options that are given in the question is the fourth option or option "d".
Answer: Marie Skłodowska Curie (/ˈkjʊəri/ KEWR-ee;[3] French: [kyʁi]; Polish: [kʲiˈri]), born Maria Salomea Skłodowska (Polish: [ˈmarja salɔˈmɛa skwɔˈdɔfska]; 7 November 1867 – 4 July 1934), was a Polish and naturalized-French physicist and chemist who conducted pioneering research on radioactivity.
As part of the Curie family legacy of five Nobel Prizes, she was the first woman to win a Nobel Prize, the first person and the only woman to win the Nobel Prize twice, and the only person to win the Nobel Prize in two scientific fields. She was also the first woman to become a professor at the University of Paris.[4]
She was born in Warsaw, in what was then the Kingdom of Poland, part of the Russian Empire. She studied at Warsaw's clandestine Flying University and began her practical scientific training in Warsaw. In 1891, aged 24, she followed her elder sister Bronisława to study in Paris, where she earned her higher degrees and conducted her subsequent scientific work.
She shared the 1903 Nobel Prize in Physics with her husband Pierre Curie and physicist Henri Becquerel, for their pioneering work developing the theory of "radioactivity" (a term she coined).[5][6] Using techniques she invented for isolating radioactive isotopes, she won the 1911 Nobel Prize in Chemistry for the discovery of two elements, polonium and radium.
Explanation:
