B. The work once done by skilled workers was now done by machines and unskilled workers.
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Mass-production techniques and technology called for setting up huge factories with large work force. It created a lot of jobs but due to the division of labor, the skill requirements for a particular job were quite monotonous. Skilled workers were replaced by machines and unskilled machine operators that could perform a single task instead of an array of tasks.
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Another word for currency is cash, money or banknotes
Answer:
The Clean Air Act, The Endangered
Explanation:
The Clean Air Act : It was although introduced by president Johnson in mid 1960s, but got important amendments in 1970s. It undertook many steps to control air pollution. One most important provision of 1970s version was elimination of lead based gasoline.
The Endangered Species : It was an important act regarding preservation of endangered (on the verge of extinction) species. It was passed by President Richard Nixon in early 1970s. The law had been successfully implemented, as no specie had gone extinct after getting in the act's list.
1. Guinea-Bissau=Bissau
2. Sierra Leone=Freetown
3. Liberia=Monrovia
4. Benin=Porto-Novo
