Explanation: The Northern Plains of India are a significant geographical feature that stretches across the northern part of the country. This vast alluvial plain is formed by the deposition of silt by three major river systems: the Indus, the Ganga, and the Brahmaputra. The Northern Plains are divided into three main sections: the Punjab Plain, the Ganga Plain, and the Brahmaputra Plain.
The easternmost state within the Northern Plains is Assam. Assam is located in the northeastern part of India and is situated on the Brahmaputra Plain. The Brahmaputra River, which flows through Assam, is a major tributary of the Ganga and is responsible for the formation of the Brahmaputra Plain. This plain is characterized by its fertile alluvial soil, which supports extensive agriculture.
It is important to note that while Arunachal Pradesh is located in the northeastern region of India, it is not part of the Northern Plains. Arunachal Pradesh is situated in the Himalayan foothills and is characterized by its mountainous terrain. Similarly, Punjab, located in the western part of the Northern Plains, is not the easternmost state. West Bengal, although it is in the eastern part of India, is not the easternmost state within the Northern Plains.
Understanding the geographical layout of the Northern Plains and the location of the states within this region is crucial for comprehending the geographical and agricultural significance of these areas. Assam, being the easternmost state in the Northern Plains, plays a vital role in the agricultural and economic landscape of the region. Its fertile plains and abundant water resources make it a significant agricultural hub, particularly for crops like tea and rice.
In summary, Assam is the correct answer as it is the easternmost state located within the Northern Plains of India, making it a key geographical and agricultural region in the country.