Incorrect! The first transatlantic telegraph cable was completed in 1866,
allowing near-instantaneous communication between North America and Europe for the first time.
An earlier attempt in 1858 resulted in a cable that failed after just a few weeks.
The successful 1866 cable ushered in a new era of global telecommunications.
The question was this
What year was the first transatlantic telegraph cable completed,
allowing communication between North America and Europe?
The question wasn't about a successful one. So 1858 was correct,
as you state in your answer
Question (8)The dogs date?
Why did Albert Einstein win the Nobel Prize in Physics in 1921?
Answer:
The Nobel Prize in Physics 1921 was awarded to Albert Einstein
"for his services to Theoretical Physics,
and especially for his discovery of the law of the photoelectric effect"
Not for his explanation but his discovery? of the law.
Question (9)
How many moons does Jupiter have?
Answer:
Jupiter has 95 moons that have been officially recognized by the
International Astronomical Union 1.
These moons vary widely in size and characteristics.
The most massive ones are the four Galilean moons:
Io, Europa, Ganymede, and Callisto. These were independently discovered in 1610 by Galileo Galilei and Simon Marius and were the first objects found to orbit a body that was neither Earth nor the Sun.
The Galilean moons are nearly spherical in shape due to their planetary mass,
and they would be considered major planets if they were in direct orbit around the Sun.
The remaining 91 known moons and the rings together compose just 0.003% of the total orbiting mass around Jupiter.
Additionally, Jupiter is expected to have about 100 irregular moons larger than 1 km (0.6 mi) in diameter, plus around 500 smaller retrograde moons down to diameters of 0.8 km (0.5 mi) 2.
Quite a celestial entourage, isn’t it?
I've definitely got too much spare time on my hands.