Homo Erectus used and made fire at least 400,000 years ago. Earlier fire use is uncertain—early humans likely first maintained natural fires before learning to create fire, but archaeologists struggle to distinguish between the two.

People continued living in small hunter-gatherer groups.

This period is called the "Stone Age" because stone tools are the most common remains.

Irrigation and food storage technologies developed, cities emerged, and labor became more diverse and specialized.

In the Middle East and Eastern Mediterranean, where history first emerged, this marks the era of the first civilizations—the "Ancient Empires" like the Assyrians, Egyptians, Persians, Greeks, and Romans.

In the Modern Age, scientific research fueled technological advances, leading to global trade and colonialism. Europe imported raw materials and exported manufactured goods. The Industrial Revolution in England later intensified this trend.

adding machine.

invented the electric motor.

By the century’s end, there were spaceships, computers, the internet, and mobile phones. Most 19th- and 20th-century inventions resulted from the work of many individuals, shaping a history of patents and lawsuits.

The tail controls direction with a horizontal and vertical stabilizer.

Transistors are much smaller, cheaper and robust than the vacuum tubes used

previously. Now it is also the base for all computer processors.

• Reducing non-renewable energy consumption

• Improving efficiency (e.g., better engines, boilers, home insulation)

• Using renewable energy (e.g., solar, wind, hydroelectric power)

• Better design reduces material use and replaces non-sustainable materials with sustainable ones.

• Recycling technologies recover materials from waste for new products.

• Most effective recycling includes metals, glass, cardboard, and wood.

• Both approaches reduce waste and limit resource extraction from nature.

• Health Protection: Lead removed from gasoline and paint; mercury eliminated from thermometers.

• Environmental Protection: CFC gases eliminated from refrigerators (to protect the ozone layer); efforts to reduce CO₂ emissions to combat global warming.

• Industrial Impact: The problem worsened during the Industrial Revolution, but modern technologies now help minimize risks.

From the beginning of humanity until the invention of agriculture, people lived in small groups, surviving by hunting animals, gathering wild plants, and sometimes fishing.

Some groups had territories, while others were nomadic.

The invention of agriculture led to rapid population growth in fertile valleys.

This growth required new construction techniques for homes, leading to the development of villages near farmland.

The village became the center of social life.

With agriculture, not everyone needed to produce food. This allowed some people to specialize in other jobs, such as construction or making clothes.

Farmers and artisans began trading their products. Over time, trading became a specialized profession.

Traders worked locally and over long distances. The Phoenicians were the most famous trading society.

Machines replaced artisans by mass-producing standardized products in factories.

Industry grew rapidly, leading many farmers to switch to factory work. Jobs became repetitive, especially on assembly lines.

A society is considered industrial when more people work in industry than in farming.

With automation and technological advances, industry needed fewer workers.

Since food and industrial goods were produced efficiently, more people shifted to services (e.g., shops, restaurants, banking, tourism).

A society is considered post-industrial when more people work in services than in industry.

20th-century information technology (telephone, internet, television) enabled mass media communication.

People can now access global news, communicate instantly, and read blogs.

The internet and search engines have revolutionized how we find and share information.

Our society is mainly post-industrial, information-based, and global, but farming, fishing, and industry still play important roles.

In the modern world, elements of all types of societies coexist.