History is the study of the human past. To understand the past, historians use various sources — objects, writings, and oral traditions left behind by people. Understanding how to read a timeline and evaluate sources is the foundation of historical study.
---
Key Concepts
History: A systematic study of the past using evidence. It tells us about human societies, events, rulers, cultures, and changes over time.
Prehistory: The period before written records. Studied through archaeology.
Timeline: A chronological arrangement of events. It shows the sequence and relative time between events.
BC (Before Christ) / BCE (Before Common Era): Years counted backwards from year 1. Example: 500 BC is older than 100 BC.
AD (Anno Domini) / CE (Common Era): Years counted forward from year 1. Example: AD 500 is earlier than AD 1000.
Century: A period of 100 years. The 1st century CE = 1–100 CE; 20th century = 1901–2000 CE.
Millennium: A period of 1,000 years.
---
Sources of History
- Primary Sources: Direct, firsthand evidence from the time being studied.
- Archaeological Sources: Pottery, tools, coins, buildings, bones — physical remains excavated from the ground.
- Inscriptions: Writing carved on stone pillars, cave walls, or copper plates. Example: Ashokan edicts.
- Coins: Give information about rulers, trade, religion, and dates.
- Manuscripts: Handwritten texts on palm leaves, bark (bhojpatra), or cloth. Example: ancient Vedic texts.
Secondary Sources: Accounts written later, based on primary sources. Example: history textbooks, biographies.
Oral Sources: Songs, stories, and traditions passed down by word of mouth. Important for tribal and folk history.
---
Key Historical Periods (Indian Context)
- Ancient Period: up to ~750 CE
- Medieval Period: ~750 CE to ~1750 CE
- Modern Period: ~1750 CE onwards
---
Worked Examples
How do historians calculate the difference between two dates?
- Event A occurred in 300 BC; Event B occurred in 200 CE. Difference = 300 + 200 = 500 years. (Add BC and CE years when crossing zero.)
If an event happened in the 3rd century BCE, what is the range of years?
- 3rd century BCE = 300 BCE to 201 BCE (centuries in BCE count backwards).
Arrange these in order from oldest to most recent: 500 BCE, 300 CE, 100 BCE, 1000 CE.
- Oldest to newest: 500 BCE → 100 BCE → 300 CE → 1000 CE.
Why are coins important historical sources?
- Coins carry the image of the ruler, their name, and sometimes a date. They also tell us about trade routes and the prosperity of a kingdom. Example: Gupta coins tell us about Chandragupta II.
What are Ashokan edicts and what information do they provide?
- Ashokan edicts are inscriptions (writing on stone pillars and rocks) ordered by Emperor Ashoka (~3rd century BCE). They provide information about his policies, Buddhism, governance, and the spread of the Mauryan Empire.
How is a manuscript different from an inscription?
- A manuscript is a handwritten book on organic material (palm leaf, bark). An inscription is writing carved on a hard surface (stone, metal). Manuscripts can decay; inscriptions last longer.
An archaeologist finds pottery with geometric patterns at a site in Rajasthan. What does this tell us?
- The pottery suggests that people lived at that site and had skills in craftsmanship. The style of pottery (colour, patterns) can help date the settlement and link it to known cultures like the Indus Valley Civilisation.
---
Key Formulas / Rules
- Years in BCE: count backwards — the larger the number, the older the date.
- Difference across BCE and CE: add the two numbers (e.g., 200 BCE to 300 CE = 200 + 300 = 500 years).
- Century: century number = (year / 100) rounded up. E.g., 256 CE is in the 3rd century CE.
---
Common mistakes
Common mistakes
Students think 100 BCE is older than 500 BCE — it is the opposite. In BCE, larger numbers are older. Also confuse "century" with "decade" — a century is 100 years, a decade is 10 years.
---
Summary
History is studied using primary sources (coins, inscriptions, manuscripts, archaeological finds) and secondary sources. Timelines help us place events in order. Understanding BC/BCE and AD/CE dating is essential. Prehistory (before writing) is studied through archaeology.