Timeline and Sources of History
History is an unending dialogue between the present and the past, helping us understand the present world through the lens of yesterday's society. E.H. Carr defined it as such.
Various specialists help us learn about the past, including geologists, palaeontologists, anthropologists, and archaeologists, each focusing on different aspects of Earth's and human history.
Geologists study the physical features of the Earth, such as soil, stones, hills, mountains, rivers, seas, and oceans, to understand its long history.
Palaeontologists study the remains of plants, animals, and humans from millions of years ago, preserved as fossils within layers of soil or rocks.
Anthropologists study human societies and cultures, tracing their development and variations from the oldest times to the present day.
Archaeologists study the past by excavating and analyzing remains left behind by people, plants, and animals, such as tools, pots, bones, and structures.
The Gregorian calendar is commonly used worldwide, with years designated as Common Era (CE) or Anno Domini (AD) for after Jesus' birth, and Before Common Era (BCE) or Before Christ (BC) for earlier years.
It is important to remember that there is no 'year zero' in the Gregorian calendar; the year 1 CE immediately follows the year 1 BCE.
A century represents a period of 100 years, while a millennium covers 1,000 years, both calculated from 1 CE or 1 BCE to mark longer durations in history.
A timeline is a convenient tool that visually marks a sequence of dates and events, helping to understand the order in which historical occurrences took place.
Historians rely on a variety of sources to reconstruct the past, including objects, monuments, written records, and oral traditions from different periods.
Historians gather information from as many sources as possible, carefully comparing them to confirm details or resolve contradictions to recreate historical events.
Modern scientific studies, such as those in ancient climates, genetics, and chemical analysis of excavated materials, increasingly provide fresh insights into the past.
Modern humans (Homo sapiens) appeared about 300,000 years ago, living in groups as hunter-gatherers, constantly seeking shelter and food.
Early humans used fire, developed improved stone tools like axes and arrowheads, and created simple ornaments, with aspects of their life visible in rock paintings.
The last Ice Age ended around 12,000 years ago, leading to a warmer climate that enabled humans to start settling down, cultivating cereals, and domesticating animals.
With increased food availability, communities grew in size and complexity, often settling near rivers for fertile soil and water, and establishing collective welfare systems.
As communities evolved, new technologies emerged, including pottery for making clay objects and the use of metals like copper and iron for durable tools and ornaments.