The REAL History of Metal Threads in 2 Minutes!

Good job bro. I learned sumn I didn't know fron this. Short, sweet & to tha point. I like it.

Wow. Didn’t teach a single thing. Hopefully this comment helps your algorithm because your content sucks

I listened on headphones - your audio needs a little fettling. I hope this is constructive.

Great video mate!

250 BC.. "Fast Forward to 1750 AD"... Thats a huge leap.

The "screw pump"... sht saved the world. We also stopped drinking the water we put poop in. And also antibiotics. Theres that too.

I always thought Leonardo da Vinci used screws in his designs. But all there was were Archimedes screws for pumping? Curious...