The answers to my earlier post are shown in bold below. I have included the question simply for your information.

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- On 4 June 1783, an uncrewed hot-air balloon was launched at Annonay in southeastern France. This marked the first public demonstration of the discovery that hot air in a large, lightweight bag rises. Who made this discovery and constructed and launched the balloon? Who made this discovery and constructed and launched the balloon?
- Montgolfier Brothers—Joseph-Michel and Jacques-Étienne, invented the hot air balloon and conducted the first untethered flights in 1783.

Transcontinental Express.
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- Montgolfier Brothers—Joseph-Michel and Jacques-Étienne, invented the hot air balloon and conducted the first untethered flights in 1783.
- On this day in 1876, the first Transcontinental Express arrived in San Francisco after travelling from New York. How long did the journey take?
- 83 hours and 39 minutes—On 4 June 1876, the Transcontinental Express, an express train, arrived in San Francisco, California, via the first transcontinental railroad. This remarkable feat was achieved in just 83 hours and 39 minutes, leaving New York City behind. The news of the Transcontinental Express’s arrival spread rapidly across the United States, captivating newspapers and sparking widespread excitement.

Ariane 5 flight VA-256 on the launch pad with the James Webb Space Telescope
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- 83 hours and 39 minutes—On 4 June 1876, the Transcontinental Express, an express train, arrived in San Francisco, California, via the first transcontinental railroad. This remarkable feat was achieved in just 83 hours and 39 minutes, leaving New York City behind. The news of the Transcontinental Express’s arrival spread rapidly across the United States, captivating newspapers and sparking widespread excitement.
- Today in 1996, the maiden flight of the European Space Agencies Ariane 5 rocket ended in an explosion after 37 seconds. What was the cause of this incident?
- Software bug—Ariane flight V88, the maiden flight of Ariane 5, failed due to software errors causing the rocket to veer off course and self-destruct. The failure, costing over US$370 million, is known as one of the most infamous software bugs in history.

Henry Ford sits in his first automobile, the Ford Quadricycle, in 1896.
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- Software bug—Ariane flight V88, the maiden flight of Ariane 5, failed due to software errors causing the rocket to veer off course and self-destruct. The failure, costing over US$370 million, is known as one of the most infamous software bugs in history.
- In 1896, Henry Ford completed a successful test on his first gasoline-powered automobile. What did he call it?
- Ford Quadricycle—in 1896, Henry Ford completed his first experimental automobile, the Quadricycle, in Detroit. This success led to his founding of the Ford Motor Company in 1903 and become one of the world’s richest men. The original Quadricycle is in The Henry Ford Museum in Dearborn, Michigan.

Illustration of Humpty Dumpty by John Tenniel, from Through the Looking Glass, 1871.
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- Ford Quadricycle—in 1896, Henry Ford completed his first experimental automobile, the Quadricycle, in Detroit. This success led to his founding of the Ford Motor Company in 1903 and become one of the world’s richest men. The original Quadricycle is in The Henry Ford Museum in Dearborn, Michigan.
- On 4 June 1937, an American supermarket chain introduced one of the world’s first shopping carts. What was the supermarket chain?
- Humpty Dumpty—Sylvan Goldman, owner of the Humpty Dumpty supermarket chain in Oklahoma. Inspired by a night of contemplation in his office in 1936, Goldman wondered how customers could move more groceries.
