Pfizer Inc a pharmaceutical company, which made COVID-19 vaccine belongs to which country?

🧠 Explanation:

Pfizer, a U.S. company, developed a COVID-19 vaccine. Knowing this helps students and health enthusiasts understand vaccine development. Pfizer is key for studying biology or health in school. Learning this helps with science projects or exploring medical advancements. It’s useful for biology classes, making it relevant for understanding vaccines. Knowing Pfizer’s role helps students grasp its impact, ensuring better comprehension for academic work or general knowledge about global health responses.