https://m.youtube.com/watch?v=WMgMNEP4kls
https://www.youtube.com/watch?v=ylHEPBa_C74
https://m.youtube.com/watch?v=eFoE_lCCbn4
https://m.youtube.com/watch?v=_3rYZy9vcuE
https://www.youtube.com/watch?v=mJCr2l56fDc
1825- The American who popularized the concept of interchangeable parts, Eli Whitney, was born.
https://m.youtube.com/watch?v=CzYLfbIpGZk
https://m.youtube.com/watch?v=4LQAPV1lsYk
1902- The Toronto Mining Exchanges Ltd. Becomes the Standard Stock and Mining Exchange Ltd.
https://m.youtube.com/watch?v=XXZ-s-KkN6s