The stone age is the prehistoric period, i.e., the period before the development of the script, therefore the main source of information for this period is the archaeological excavations. Robert Bruce Foote is the archaeologist who discovered the first palaeolithic tool in India, the Pallavaram hand

Ocean currents are continuous movements of water in the ocean that follow set paths, kind of rivers in the ocean. There are two distinct current systems in the ocean—surface circulation, which stirs a relatively thin upper layer of the sea, and deep circulation, which sweeps along the deep-sea flo

Western Disturbances are low-pressure depressions that occur during winters, particularly in northern India. They are the extratropical storms that originate in the Mediterranean region and bring sudden winter rain and snow to the north-western parts of the Indian subcontinent.

Impact of western 

Indian Monsoon can be best described as the seasonal reversal of winds. In the Indian monsoon winds flow from sea to land during the summer and from land to sea during winter.

The mechanism of the Indian monsoon can be understood in two phases namely, the onset of the South-West Monsoon and retre

On the basis of seismic investigations, the earth can be divided into three major layers: crust, mantle, core.
Differentiation of layers of Earth

Crust: The outer superficial layer of the earth is called the "crust". In continental regions, the crust can be divided into two layers.
The upper la

1. A cloud is an accumulation or grouping of tiny water droplets and ice crystals that are suspended in the earth atmosphere.

2. They are masses that consist of huge density and volume and hence it is visible to naked eyes.

3. There are different types of Clouds. They differ from each other in

1. In the north-east, the Ahoms [a kingdom in Assam near Brahmaputra valley] were defeated in 1663, but they rebelled again in the 1680s. Because Ahoms successfully resisted Mughal expansion for a long time and they dont want to give up their sovereignty which they were enjoying for 600 years .

2

Jahangir [1605-1627]:-
1. Military campaigns started by Akbar continued.

2. The Sisodiya ruler of Mewar, Amar Singh, accepted Mughal service. Less successful campaigns against the Sikhs, the Ahoms and Ahmadnagar followed.

Shah Jahan [1627-1658]: 

1. Mughal campaigns continued in the Deccan