World's population and weapons are made from trees.And later, culture changed to Bronze or Iron.They are making tools to Bronze.In Brozen Age there has a lots of changes like materials that Brozen people use, culture, village and inventingSometimes material that called copper is more better than Bronze.
.First, copper used for creating tools.This is about 4500 to 3500 BCE.Copper is in anywhere, with fresh air.It can be have 160 minerals there.In Bronze Age some people can't use metals because they are not rich or not able to use, so they sometimes use Stone tools also. Bronze Age made a lots of tools like Arrowhead, mud brick and Bronze sword.They made boat, and started to communicate.
In early Bronze Age, they had first villages, but not that large.Tools get improved then Stone Age.It changes to bronze and not easily broken or cracked.Also they invented mud brick for making house.They built a wall for protecting the village.They also invented new tools like copper.
In Bronze Age, they started to use metals and bronze.They make tools and weapon to use bronze and that was more stronger and not easily cracking and broken.Also, They made different and has difference by other group for the culture.They had culture and replaced to the tools. They invited a lot of things