Here's a short story:

A submarine communications cable is a cable laid on the sea bed between land-based stations to carry telecommunication signals across stretches of ocean. The first submarine communications cables, laid in the 1850s, carried telegraphy traffic. Subsequent generations of cables carried telephone traffic, then data communications traffic. Modern cables use optical fiber technology to carry digital data, which includes telephone, Internet and private data traffic. 

Modern cables are 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 which comprise the majority of the run, although larger and heavier cables are used for shallow-water sections near shore. Submarine cables connected all the world's continents except Antarctica when Java was connected to Darwin, Northern Territory, Australia in 1871 in anticipation of the completion of the Australian Overland Telegraph Line in 1872 connecting to Adelaide, South Australia and thence to the rest of Australia. 

After William Cooke and Charles Wheatstone had introduced their working telegraph in 1839, the idea of a submarine line across the Atlantic Ocean began to be thought of as a possible triumph of the future. Samuel Morse proclaimed his faith in it as early as 1840, and in 1842, he submerged a wire, insulated with tarred hemp and India rubber, in the water of New York Harbor, and telegraphed through it. The following autumn, Wheatstone performed a similar experiment in Swansea Bay. A good insulator to cover the wire and prevent the electric current from leaking into the water was necessary for the success of a long submarine line. India rubber had been tried by Moritz von Jacobi, the Prussian electrical engineer, as far back as the early 19th century. (End of story)

Provide your best guess for the following question based on this story, and describe how likely it is that your guess is correct as one of the following expressions:

Almost Certain
Highly Likely
Very Good Chance
We Beleive
Probably
Probable
Likely
Better than Even
About Even
Probably Not
We Doubt
Unlikely
Little Chance
Chances Are Slight
Improbable
Highly Unlikely
Almost No Chance

Give ONLY the guess and your confidence, no other words or explanation. For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>
Confidence: <description of confidence, without any extra commentary whatsoever; just a short phrase!>

Here are a few examples of questions and answers:

Question: When were the first submarine communication cables placed?
Guess: 1850s
Confidence: <appropriate level of confidence in this guess>

Question: Where do they lay?
Guess: on the sea bed
Confidence: <appropriate level of confidence in this guess>

Question: What kind of communications did they initially carry?
Guess: telegraphy
Confidence: <appropriate level of confidence in this guess>

Question: What technology do they currently use?
Guess: optical fiber
Confidence: <appropriate level of confidence in this guess>

Question: Can they provide internet service?
Guess: yes
Confidence: <appropriate level of confidence in this guess>

Question: When was the telegraph first introduced?
Guess: 1839
Confidence: <appropriate level of confidence in this guess>

Question: By whom?
Guess: William Cooke and Charles Wheatstone
Confidence: <appropriate level of confidence in this guess>

Question: Did Samuel Morse believe in a oceanic submarine line?
Guess: yes
Confidence: <appropriate level of confidence in this guess>

Question: Crossing which ocean?
Guess: the Atlantic
Confidence: <appropriate level of confidence in this guess>

Question: What year did he express his support in the project?
Guess: 1840
Confidence: <appropriate level of confidence in this guess>

Question: What year did he perform a test of his own?
Guess: 1842
Confidence: <appropriate level of confidence in this guess>

Question: Which body of water did he use?
Guess: New York Harbor,
Confidence: <appropriate level of confidence in this guess>

Question: Who else performed a similar test?
Guess: Wheatstone
Confidence: <appropriate level of confidence in this guess>

Question: Where?
Guess: Swansea Bay.
Confidence: <appropriate level of confidence in this guess>

Question: How wide are modern cables?
Guess: 1 inch
Confidence: <appropriate level of confidence in this guess>

Question: Do they reach all of the continents?
Guess: no
Confidence: <appropriate level of confidence in this guess>

Question: Which one is excluded?
Guess: Antarctica
Confidence: <appropriate level of confidence in this guess>

Question: Which continent was the most recent to be connected?
Guess: Australia.
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: What year did it join?

1872