Answer: 1920- Hair Dryer
1920- First radio station
1920- The Thompson Sub-Machine Gun
1920- The Band Aid
1921- First robot built
1923- Traffic Signal
1925- Mechanical Television
1926- Liquid Fueled Rockets
1928- Penicillin
1929- Car radio
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Explanation:
Historians view the Chester Arthur presidency as an important
surprise, one that no one would have expected. Put simply, he performed
well in office, defying his state-based reputation as a slick machine
politician. Despite his poor health, he attempted to govern competently,
and he succeeded to a degree that was never acknowledged by his fellow
politicians, the press, or the great mass of Americans.
Although Arthur preferred efficient partisan government service to
one selected by competitive examinations, he nevertheless showed
tremendous flexibility and a willingness to embrace reform. By
struggling with the tariff issue (especially being willing to question
the protectionist doctrines of the Republican Party) and supporting the
modernization of the American Navy, Arthur stands as an important
transitional figure in the reunification of the nation after the bitter
turmoil of the Civil War and Reconstruction. No party hack, Arthur
demonstrated how the office of President could bring out the very best
in its occupants.
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A. Ideologies of the justices and B. evolving attitudes.
The need to maximize a limited access to water for both human consumption and agriculture might explain the fact that both Peruvian cultures - both agricultural civilizations - used underground aqueducts to collect and transport water to reservoirs that were located nearby. For instance, the rivers that supplied the Nazca people did not carry any water during part of the year, so they conceived an innovative system that allowed them to collect the water from the rain that filtered through the ground into underground galleries, which allowed them to prevent the loss of that water - they inhabited a desert area, after all. The Chavin civilization also inhabited arid and extensive coastal areas that required ample and complex irrigation systems, hence the importance of saving and transporting water.
Answer:
B - a country where the government controls the economy but allows free elections and other civil liberties
Explanation:
correct on edge