- Canals Interrupted (haikimagazine.com)
Never underestimate the importance of a big ditch, especially if it links two oceans. Canals allow for the rapid and free flow of goods, keeping the global economy ticking. Any threat to a major shipping canal means economic and political turmoil. Look at the Suez Crisis of 1956: when Egypt nationalized the Suez Canal, Israel, France, and Britain invaded, and the former Soviet Union threatened to bombard Europe with nuclear missiles if the invading forces did not withdraw.
- Edison screw (Wikipedia)
Edison screw (ES) is a standard lightbulb socket for electric light bulbs. It was developed by Thomas Edison (1847–1931), patented in 1881, and was licensed in 1909 under General Electric’s Mazda trademark. The bulbs have right-hand threaded metal bases (caps) which screw into matching threaded sockets (lamp holders). For bulbs powered by AC current, the thread is generally connected to neutral and the contact on the bottom tip of the base is connected to the “live” phase.
- Suez Canal (Wikipedia)
The Suez Canal (Arabic: قَنَاةُ ٱلسُّوَيْسِ, Qanāt as-Suwais) is an artificial sea-level waterway in Egypt, connecting the Mediterranean Sea to the Red Sea through the Isthmus of Suez and dividing Africa and Asia (and by extension, the Sinai Peninsula from the rest of Egypt). The 193.30-kilometre-long (120.11 mi) canal is a key trade route between Europe and Asia.