History puzzle · July 3, 2026

The industrial & modern age

Steam to silicon

Difficulty ★★★★ · 10 events

In Hand of History for July 3, 2026 you place these 10 real events back into the order they happened. Here they are in chronological order, with the date revealed and why each one matters.

1819

The SS Savannah becomes the first steam-powered vessel to cross the Atlantic Ocean.

Savannah's owners are so worried no one will buy tickets on a 'fire ship' that the crossing carries zero paying passengers.

The first steamship to cross the Atlantic proves steam power can conquer ocean distances, even if most of the voyage is under sail.

Great Exhibition opens in London — 1851
1851

London's Crystal Palace hosts the Great Exhibition, the world's first international industrial fair.

The 563-metre glass building is assembled entirely from pre-made, interchangeable cast-iron and plate-glass modules — a radical manufacturing concept in itself.

The Great Exhibition of the Works of Industry of All Nations, also known as the Great Exhibition or the Crystal Palace Exhibition, was an international exhibition that took place in Hyde Park, London, from 1 May to 15 October 1851. It was the first in a series of world's fairs, exhibitions of culture and industry that became popular in the 19th century. The event was organised by Henry Cole and Albert, Prince Consort of Victoria, Queen of the United Kingdom.

📷 Wikimedia Commons

US transcontinental railroad completed — 1869
1869

A golden spike is driven at Promontory Summit, Utah, completing America's first transcontinental railroad.

The ceremonial last spike is connected to a telegraph line so that when the hammer strikes it, the signal 'Done' instantly fires across the nation.

America's first transcontinental railroad was a 1,911-mile (3,075 km) continuous railroad line built between 1863 and 1869 that connected the existing eastern U.S. rail network at Council Bluffs, Iowa, with the Pacific coast at the Oakland Long Wharf on San Francisco Bay. The rail line was built by three private companies over public lands provided by extensive U.S. land grants. Building was financed by both state and U.S. government subsidy bonds as well as by company-issued mortgage bonds. The Western Pacific Railroad Company built 132 miles (212 km) of track from the road's western terminus at Alameda/Oakland to Sacramento, California. The Central Pacific Railroad Company of California (CPRR) constructed 690 miles (1,110 km) east from Sacramento to Promontory Summit, Utah Territory. The Union Pacific Railroad (UPRR) built 1,085 miles (1,746 km) from the road's eastern terminus at the Missouri River settlements of Council Bluffs and Omaha, Nebraska, westward to Promontory Summit.

📷 Wikimedia Commons

Brooklyn Bridge opens — 1883
1883

New York's Brooklyn Bridge opens to the public as the longest suspension bridge on Earth.

Six days after opening, a rumour that the bridge is about to collapse triggers a stampede that kills twelve people — the structure itself is undamaged.

The Brooklyn Bridge is a cable-stayed suspension bridge in New York City, spanning the East River between the boroughs of Manhattan and Brooklyn. Opened on May 24, 1883, the Brooklyn Bridge was the first fixed crossing of the East River. It was also the longest suspension bridge in the world when opened, with a main span of 1,595.5 feet (486.3 m) and a deck 127 ft (38.7 m) above mean high water. The span was originally called the New York and Brooklyn Bridge or the East River Bridge but was officially renamed the Brooklyn Bridge in 1915.

📷 Wikimedia Commons

First modern Olympic Games held — 1896
1896

The first modern Olympic Games open in Athens, Greece, reviving an ancient tradition after 1,500 years.

The marathon distance is run at roughly 40 km — not the now-standard 42.195 km — because organisers simply measure the road from Marathon to the stadium.

The 1896 Summer Olympics, officially known as the Games of the I Olympiad, and commonly known as Athens 1896, were the first international Olympic Games held in modern history. Organised by the International Olympic Committee (IOC), which had been created by French aristocrat Pierre de Coubertin, the event was held in Athens, Greece, from 6 to 15 April 1896.

📷 Wikimedia Commons

1913

Henry Ford installs the world's first moving automobile assembly line at his Highland Park plant.

Ford partly gets the idea from the 'disassembly lines' of Chicago meatpacking houses, where carcasses move past stationary butchers.

Ford's moving assembly line at Highland Park slashes the time to build a Model T from over twelve hours to about 93 minutes, revolutionising manufacturing.

1926

Robert Goddard launches the world's first liquid-fueled rocket from a farm in Auburn, Massachusetts.

The entire flight lasts just 2.5 seconds and the rocket rises only 12.5 metres — roughly the height of a two-storey house.

Robert Goddard's liquid-fueled rocket demonstrates that space travel is physically achievable, laying the technical foundation for the entire space age.

Turing defines the universal computing machine — 1936
1936

Alan Turing publishes his paper describing an abstract 'universal computing machine' that can run any algorithm.

Turing writes the paper to solve a narrow logic puzzle posed by David Hilbert — he doesn't set out to invent the concept of the computer.

A Turing machine is a mathematical model of computation describing an abstract machine that manipulates symbols on a strip of tape according to a table of rules. Despite the model's simplicity, it is capable of implementing any computer algorithm.

📷 Wikimedia Commons

De Havilland Comet enters service — 1952
1952

BOAC's de Havilland Comet becomes the world's first jet-powered passenger airliner in regular commercial service.

Flying so high above the weather, passengers marvel that they can see the curvature of the Earth — but the square windows are quietly harboring a deadly metal-fatigue flaw.

The de Havilland DH.106 Comet is a four-engine narrow body aircraft developed and manufactured by de Havilland in the United Kingdom. The world's first commercial jet airliner, the Comet 1 prototype first flew in 1949. It features an aerodynamically clean design with four de Havilland Ghost turbojet engines located in the wing roots, a pressurised cabin, and large windows. For the era, it offered a relatively quiet, comfortable passenger cabin and was commercially promising at its debut in 1952.

📷 Wikimedia Commons

First nuclear power station opens — 1956
1956

Queen Elizabeth II opens Calder Hall in Cumberland, the world's first full-scale commercial nuclear power station.

Calder Hall's reactors are also producing weapons-grade plutonium for Britain's nuclear arsenal — the electricity is essentially a profitable side product.

Calder Hall Nuclear Power Station is a former Magnox nuclear power station on the Sellafield site in Cumbria in North West England. Calder Hall was the first full-scale nuclear power station to enter operation in the West, and was the sister plant to the Chapelcross plant in Scotland. Both were commissioned and originally operated by the United Kingdom Atomic Energy Authority. The primary purpose of both plants was to produce weapons-grade plutonium for the UK's nuclear weapons programme, but they also generated electrical power for the National Grid.

📷 Wikimedia Commons

Play today's puzzle ▸