The correct answer is option 'C' - Both 1 and 2.

The Kangra school of painting is a renowned art form that originated in the Kangra region of Himachal Pradesh, India. It flourished during the 18th and 19th centuries under the patronage of the Rajput rulers of the region. The style of painting was deeply influenced by Vaishnavite traditions and depicted themes from Indian mythology, particularly the love story of Radha and Krishna.

1. Miniature Paintings Inspired from Vaishnavite Traditions:
The Kangra school of painting is known for its exquisite miniature paintings that depict various aspects of Hindu mythology, especially the love and romance between Radha and Krishna. The artists of this school were deeply influenced by the Bhakti movement, which emphasized devotion and love for God. The paintings are characterized by delicate brushwork, vibrant colors, and intricate detailing. The artists skillfully captured the expressions, emotions, and gestures of the divine couple, bringing them to life on the canvas.

These miniature paintings were created on small pieces of paper or cloth using pigments derived from minerals, plants, and precious stones. The Kangra school is renowned for its portrayal of the idyllic landscapes of the Himalayan region, with lush greenery, rivers, and mountains serving as backdrops for the divine love story.

2. Migration of Mughal Artists to the Hills following Nadir Shah's Invasion:
The Kangra school of painting was greatly influenced by the migration of Mughal artists to the hills of Kangra following the invasion of Nadir Shah in 1739. The Mughal Empire, which had been a major patron of art and culture, suffered a decline after this invasion. Many artists and craftsmen associated with the Mughal court sought refuge in the Himalayan regions, including Kangra.

These Mughal artists brought with them their expertise in miniature painting techniques and their knowledge of Persian and Mughal art styles. They infused their skills and techniques with the local artistic traditions of the Kangra region, leading to the development of a unique and distinct style of painting that came to be known as the Kangra school of painting.

The migration of Mughal artists to Kangra not only enriched the artistic landscape of the region but also played a significant role in the evolution and development of the Kangra school of painting. The artists' exposure to the Mughal court traditions and their subsequent assimilation with the local cultural milieu gave rise to a fusion of styles and themes that became characteristic of the Kangra school.

In conclusion, the Kangra school of painting is associated with both miniature paintings inspired by Vaishnavite traditions and the migration of Mughal artists to the hills from the plains following Nadir Shah's invasion. The combination of these influences contributed to the unique and exquisite art form that the Kangra school is renowned for.