As bronze age craftsmen improved their forges, they eventually designed a forge that could melt iron ore, which has a higher melting point than cooper and tin. Bronze had to come first, however, because a forge that can smelt iron ore is rather sophisticated. It probably came about just because craftsmen wanted a forge that could get the job done faster, which required more heat--but that's just a guess. But the ability to smelt iron ore lead to the invention of steel, and steel changed everything.
Of course. Why do you think such flavorless food is bought over and over. (Think about it. Is it really good, or just not offensive.)
technically, I don't think so, but they taste so good, that people want more. That whole High Fructose Corn Syrup thing, though.apparently, that (and there's tons of it in fast foods) causes you to crave more.that can be defined as addictive.
Bronze is an alloy, made by combining copper with zinc, tin and/or other metals. Iron is a discrete element. Copper is found in a relatively pure state, is malleable, and can be formed without smelting. Iron ore must be crushed and smelted before it can be used. It is not malleable, and must be cast. There isn't really anything they share except they are both metals, and 'way back in history, both have been used to make weapons. But how did the concept of Bronze transfer into the use of iron? Not sure what you mean by that, at all!
That would require some speculation, since the transition is prehistorical. Improving copper to bronze makes sense, since the bronze is mostly copper, and has a similar melting point (although metallic copper occurs naturally, it does so only in small nuggets, and must be cast to make useful tools). Iron uses completely different raw materials and requires higher temperature to smelt. A bronze furnace can be converted to an iron smelter by good insulation and applying forced air. This may have been done simply to improve the productivity of bronze casting intially. Once a means to create higher temperature was invented, it's not hard to imagine folks being curious about how hot this tihng will get, and about what happens to other stuff exposed to it (like that red soil all over the place).
