2006-08-04 14:16:54 · 33 answers · asked by rgarrett7000 2 in Science & Mathematics ➔ Mathematics
u said acheivment not invention so that would be walking on the moon then getting back safe
2006-08-04 15:43:54 · answer #1 · answered by Helen 3 · 0⤊ 0⤋
heres a list, take your pick..may not be the order others chose but thats individualism for ya
1. Electrification
2. Automobile
3. Airplane
4. Water Supply and Distribution
5. Electronics
6. Radio and Television
7. Agricultural Mechanization
8. Computers
9. Telephone
10. Air Conditioning and Refrigeration
11. Highways
12. Spacecraft
13. Internet
14. Imaging
15. Household Appliances
16. Health Technologies
17. Petroleum and Petrochemical Technologies
18. Laser and Fiber Optics
19. Nuclear Technologies
20. High-performance Materials
2006-08-04 14:25:31 · answer #2 · answered by Steelr 4 · 0⤊ 0⤋
Hate to say this Ricky, but I think the single most important achievement of mankind in the 20th century was staying alive!
2006-08-04 15:35:11 · answer #3 · answered by Anonymous · 0⤊ 0⤋
To my personal belief that mankind single highest achievement in the 20th century is the cure for polio.
2006-08-04 14:22:35 · answer #4 · answered by Anonymous · 0⤊ 0⤋
I think changing the spelling of the word "achievement" was probably mankind's highest calling, almost Godlike in it's simplicity, it's time-saving ability, and it's universal acceptance as, and I quote here from Stephen Hawking, "an ***-kicking idea." With one stroke, hope was restored to an otherwise apathetic world.
2006-08-04 14:24:36 · answer #5 · answered by lucyanddesi 5 · 0⤊ 0⤋
The discovery of the electron. Well, OK, it falls a few years short of the 20th century, but it's really what has made later technological advances possible.
2006-08-04 14:25:00 · answer #6 · answered by Bex 2 · 0⤊ 0⤋
In engineering terms I would say Concorde, and not just because I am British. Even Nasa scientists have been known to admit that sustained supersonic passenger flight was a much greater feat than putting a man on the moon.
In terms of science in general, I would say quantum theory.
In social terms, I would say the reconstruction of Europe after the second world war, which was largely thanks to the USA.
2006-08-04 14:21:58 · answer #7 · answered by Anonymous · 0⤊ 0⤋
The WWW.
2006-08-04 14:21:28 · answer #8 · answered by shmux 6 · 0⤊ 0⤋
I'm going to go with the transistor. A lot of the other answers people have given here would not have gone anywhere without the simple transistor.
Invented by Bell Labs btw.
2006-08-07 07:15:51 · answer #9 · answered by Will 4 · 0⤊ 0⤋
Atlas Shrugged by Ayn Rand
2006-08-04 16:05:09 · answer #10 · answered by rogue chedder 4 · 0⤊ 0⤋
The Quantum Theory.
2006-08-04 14:20:45 · answer #11 · answered by Anonymous · 0⤊ 0⤋