Which one of the following statements is not true for hydropower generated from river dams?
(1) Dams encourage sustainable growth.
(2) It does not pollute water or air.
(3) Hydropower facilities can have large environmental impacts.
(4) Dams displace indigenous people from their river lifelines.

Who built the Golconda Fort?

The correct answer is Kakatiya Dynasty.

Let us analyze the details related to the Golconda Fort and its construction:

1. Origin and Early Construction: The Golconda Fort, located in Hyderabad, Telangana, was originally built as a mud fort by the ruler of the Kakatiya Dynasty in the 11th century (around 1143 AD). The site was initially known as "Golla Konda", which translates to "Shepherd's Hill".

2. Subsequent Expansion: Later, during the 16th century, the fort was fortified and expanded into a grand granite fortress by the Qutb Shahi Dynasty, making it the capital of the Qutb Shahi Kingdom.

3. Analysis of Options:
- Chola Dynasty: Famous for their navy, administrative system, and temples in Southern India (Tamil Nadu region).
- Chalukya Dynasty: Known for rock-cut architecture in Badami, Aihole, and Pattadakal.
- Kakatiya Dynasty: The original builders of the initial structure of Golconda Fort.
- Pallava Dynasty: Known for shore temples and rock-cut architecture in Mahabalipuram.

Hence, the foundation of the Golconda Fort was laid by the Kakatiya Dynasty.