1 VGA - VGA is an analog output, and was most common in the CRT-era of computer displays. It has largely been phased out of any recent hardware, but you may encounter it with older computers or CRT monitors.  DisplayPort - This is a digital connection, similar to HDMI.
There is evidence that iron was known from before 5000 BCE. The oldest known iron objects used by humans are some beads of meteoric iron, made in Egypt in about 4000 BCE. The discovery of smelting around 3000 BCE led to the start of the iron age around 1200 BCE and the prominent use of iron for tools and weapons.
Iron is such a primal need for any modern civilization. One of the first things that early colonists went after, as they tried to recreate Europe in the American wilderness, was iron. Iron ore had turned up on an island off the North Carolina coast in 1585.That was too inaccessible to mine, but then Jamestown settlers found iron ore on the mainland.ne of the first things that early colonists went after, as they tried to recreate Europe in the American wilderness, was iron. Iron ore had turned up on an island off the North Carolina coast in 1585. That was too inaccessible to mine, but then Jamestown settlers found iron ore on the mainland.