Interactive timeline illustrating key historical events and eras, from prehistoric times to the contemporary age.

Let's solve this timeline puzzle step by step. The goal is to correctly place the historical events and time periods into their proper positions on the timeline, matching them with the correct dates and historical ages.

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Step 1: Understand the Timeline

The timeline is divided into five major historical periods:

1. Prehistory – Before written records (before ~3000 B.C.)
2. Ancient History – From the invention of writing (~3000 B.C.) to the fall of the Western Roman Empire (476 A.D.)
3. Middle Ages – From 476 A.D. to about 1450–1500 A.D.
4. Modern Age – From the late 15th century to the late 18th century
5. Contemporary Age – From the late 18th century to the present

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Step 2: Identify the Events and Their Dates

We are given these events and time periods:

- The first humans → ~2,000,000 years ago → Prehistory
- Invention of writing → ~3200 B.C. (around 5,000 years ago) → Ancient History
- Fall of the Roman Empire → 476 A.D. → End of Ancient History / Start of Middle Ages
- America was discovered → 1492 → Modern Age
- Start of the French Revolution → 1789 → Contemporary Age

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Step 3: Match Events to Timeline Positions

Now, let’s match each event to the correct blank on the timeline.

#### Timeline Markers:
1. 2,000,000 Years Ago → "The first humans" ✔ Already placed.
2. 5,000 Years Ago → This is around 3000 B.C., when writing was invented → Invention of writing
3. 476 A.D. → "Fall of the Roman Empire" ✔ Already placed.
4. 1492 → "America was discovered"
5. 1789 → "Start of the French Revolution"
6. 2020 → Contemporary Age (present day)

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Final Placement:

| Time Marker | Event or Period |
|--------------------|----------------------------------------|
| 2,000,000 Years Ago | The first humans |
| 5,000 Years Ago | Invention of writing |
| 476 A.D. | Fall of the Roman Empire |
| 1492 | America was discovered |
| 1789 | Start of the French Revolution |
| 2020 | Contemporary Age (current era) |

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Correct Drag-and-Drop Solution:

From left to right:

1. The first humans → 2,000,000 Years Ago → Prehistory
2. Invention of writing → 5,000 Years Ago → Ancient History
3. Fall of the Roman Empire → 476 A.D. → Middle Ages (start)
4. America was discovered → 1492 → Modern Age
5. Start of the French Revolution → 1789 → Contemporary Age
6. Contemporary Age → 2020 → Current time

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Answer Summary:

Fill in the blanks as follows:

- 5,000 Years Ago: *Invention of writing*
- 1492: *America was discovered*
- 1789: *Start of the French Revolution*

And assign the time periods:

- Ancient History → from ~3000 B.C. to 476 A.D. → covers "Invention of writing" and "Fall of the Roman Empire"
- Contemporary Age → from 1789 onward → includes "Start of the French Revolution" and 2020

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✔ Completed Timeline:

```
2,000,000 Years Ago 5,000 Years Ago 476 A.D. 1492 1789 2020
───────────────────────┬───────────────────┬───────────────┬─────────────┬─────────────┬─────────────
│ │ │ │ │
│ Invention of │ Fall of │ America │ Start of │
│ writing │ the Roman │ was │ the │
│ │ Empire │ discovered │ French │
│ │ │ │ Revolution │
│ │ │ │ │
```

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Conclusion:

The correct order for the blanks is:

1. Invention of writing → at 5,000 years ago
2. America was discovered → at 1492
3. Start of the French Revolution → at 1789

This completes the timeline accurately across the Ages of History.