 
 <prompt> text: ```Submarine communications cable na cable wey dem lay for sea bed between land-based stations to carry telecommunication signals across stretches of ocean. The first submarine communications cables, wey dem lay for 1850s, carry telegraphy traffic. Subsequent generations of cables carry telephone traffic, then data communications traffic. Modern cables dey use optical fiber technology to carry digital data, wey include telephone, Internet and private data traffic.

Modern cables dey typically about 1 inch (25 mm) in diameter and weigh around 2.5 tons per mile (1.4 tonnes per km) for the deep-sea sections wey make up the majority of the run, although larger and heavier cables dey used for shallow-water sections near shore. Submarine cables connect all the world's continents except Antarctica when Java connect to Darwin, Northern Territory, Australia for 1871 in anticipation of the completion of the Australian Overland Telegraph Line for 1872 wey connect to Adelaide, South Australia and then to the rest of Australia.

After William Cooke and Charles Wheatstone don introduce their working telegraph for 1839, the idea of a submarine line across the Atlantic Ocean begin to dey thought of as a possible triumph of the future. Samuel Morse believe in am as early as 1840, and for 1842, he submerge wire, wey dey insulated with tarred hemp and India rubber, for the water of New York Harbor, and telegraph through am. The following autumn, Wheatstone do similar experiment for Swansea Bay. A good insulator to cover the wire and prevent the electric current from leaking into the water na necessary for the success of a long submarine line. India rubber don try by Moritz von Jacobi, the Prussian electrical engineer, as far back as the early 19th century.

Answer the following questions:
1. When were the first submarine communication cables placed?
2. Where do they lay?
3. What kind of communications did they initially carry?
4. What technology do they currently use?
5. Can they provide internet service?
6. When was the telegraph first introduced?
7. By whom?
8. Did Samuel Morse believe in a oceanic submarine line?
9. Crossing which ocean?
10. What year did he express his support in the project?
11. What year did he perform a test of his own?
12. Which body of water did he use?
13. Who else performed a similar test?
14. Where?
15. How wide are modern cables?
16. Do they reach all of the continents?
17. Which one is excluded?
18. Which continent was the most recent to be connected?
19. What year did it join?
20. Where did it connect?

Numbered answers:``` <response>: ```1. 1850s
2. for sea bed
3. telegraphy
4. optical fiber
5. yes
6. 1839
7. William Cooke and Charles Wheatstone
8. yes
9. Atlantic
10. 1840
11. 1842
12. New York Harbor,
13. Wheatstone
14. Swansea Bay.
15. 1 inch
16. no
17. Antarctica
18. Australia.
19. 1872
20. Darwin``` 