The Bantu people migrated across Africa in a process known as the Bantu expansion. This refers to a series of migrations in which the Bantu people displaced or absorbed hunter-gatherers and pastoralist groups that they encountered. The Bantu people carried their language with them, as well as some technological and cultural traits, such as iron technology. However, little is known about the details of this expansion.
No. even if the equipment is similar you have to have specific training and Welding you have to use specific equipment and it can be dangerous if you don't know the guidelines
