Introduction:
The second type of metal tools used by humans were made of bronze.

Bronze Tools:
- Bronze is an alloy made primarily of copper and tin.
- Bronze tools were an important advancement in human history as they were stronger and more durable than tools made of pure copper.
- The addition of tin to copper created a stronger metal that was easier to mold and shape.

Advantages of Bronze Tools:
- Bronze tools were more efficient for various tasks such as agriculture, construction, and warfare.
- They were sharper and more long-lasting compared to stone tools.
- Bronze tools paved the way for more advanced civilizations as they allowed for the creation of more intricate tools and weapons.

Historical Significance:
- The Bronze Age, characterized by the use of bronze tools and weapons, marked a significant period in human history.
- It led to the development of complex societies and the advancement of technologies in various fields.
- Bronze tools played a crucial role in shaping the course of human civilization.
In conclusion, bronze tools played a vital role in the progress of human societies by providing stronger, more durable, and more efficient tools for various tasks. The use of bronze marked a significant advancement in technology and contributed to the development of more complex civilizations during the Bronze Age.