Give four important factors leading to 'Green Revolution'.

Explanation

**Step-by-Step Text Solution:**

1. **Introduction to Green Revolution:**
The Green Revolution refers to a significant increase in agricultural production worldwide, particularly during the 1960s. It was characterized by the introduction of new agricultural techniques and technologies aimed at improving crop yields.

2. **High-Yielding Variety (HYV) Seeds:**
One of the most important factors leading to the Green Revolution was the development and use of high-yielding variety (HYV) seeds. These seeds were genetically improved to produce more grain per plant compared to traditional varieties. The adoption of these seeds resulted in crop production increasing two to three times.

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