Give the name of the first antibiotic.

Explanation

**Step-by-Step Solution:**

1. **Understanding Antibiotics**: Antibiotics are substances that can kill or inhibit the growth of bacteria. They are crucial in treating bacterial infections.

2. **Historical Context**: The discovery of antibiotics marked a significant advancement in medicine. Before antibiotics, bacterial infections were often fatal.

3. **Discovery of the First Antibiotic**: The first antibiotic discovered was penicillin. This discovery was made by Alexander Fleming in the year 1928.

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