Gugliemo Marconi (1896)'s wireless telegraph patentUseful for, like, ship distress calls. Say, for example, the one the Titanic sent out.
Karl Benz's internal-combustion automobile engine (1885)
First skyscraper (10 stories tall) (in Chicago)1883
Cathode rays discovered1858
Alfred Nobel's dynamite (1867)First high explosive that could be safely handled. Useful for mining and clearing areas for infrastructure.
James Brindley (1761)'s Bridgewater Canal
Michael Faraday (1831)'s discovery of electromagnetic currentsMade generators and electrical engines possible
Mass slaughter is now possible, begins mechanization of warfare. Unfortunately, as some predicted, his machine gun did not prevent war — people still fought, despite these monsters being on the battlefield.
Thomas Edison (1879)Invented the incandescent lamp. Though he was, in general, prone to rude tendencies.
Robert Trevithick (1801)'s steam locomotive demonstration
William Murdock's cool thing he did (1792)Lit his home using coal gas. Also, he was James Watt's assistant.
Singer's first practical sewing machine (1851)Allowed for more sewing, including at-home
Daguerre's daguerrotype (1838)
Liverpool and Manchester Railway (1830)Began the first regular commercial rail service
Frozen!
Frozen!
First ancestor of the computer
Thomas Newcomen (1712)'s steam engineFirst commercially successful (though kind of clumsy) steam engine, used to pump water out of coal mines. Big deal, since we've just unlocked a new power source.
Boost!
Boost!
First transatlantic cable completed1858
Robert Trevithick (1801)'s steam locomotive demonstrationGeorge Stephenson's Rocket, 1829, would lead to great railroad infrastructure, which helped with city planning, made moving to the city easier, and made trade and large-scale commerce much better. For example, now placing factories in population centers made more sense. (I barely understand why myself, but okay)
Eli Whitney (1793)'s cotton ginThis separated the useful raw cotton from its seeds, making the cotton industry much more profitable. It had mixed effects — remember how a lot of cotton was farmed using slave labor.
Boost!
Boost!
Hiram Maxim's machine gun (1884)
William Murdock's cool thing he did (1792)Lit his home using coal gas. Also, he was James Watt's assistant.
The first successful steamboat. Like the locomotive, made trade so, so much better. For example, now the US could leverage its advantage in having the Mississippi river.
Allowed for more sewing, including at-home
Cartwright's power loom (1787)According to wikipedia:
Automated thread spinning
Cathode rays discovered1858
Richard Arkwright's water frame (1769)More efficient thread spinning
Early form of photography
This would allow for long-distance communication
Thomas Edison (1879)
Marc Brunel's first underwater tunnel (1826-1842)Under the Thames
Joseph Monier (1849)
Eiffel Tower (1889)For the World Exposition in Paris
James Watt's efficient steam engine (1765)Like fifty years later, they finally came out with a steam engine with a condensing chamber, making it more efficient. Also a pretty big deal.
Michael Faraday (1831)'s discovery of electromagnetic currents