Explanation

Edward Jenner was a physician and scientist who pioneered the concept of vaccines including creating the smallpox vaccine, the world's first ever vaccine.

He belonged to the British.

Explanation

Marie Curie is best known for her work in radioactivity

She also discovered the elements radium and polonium.

Her pioneering research in radioactivity earned her two Nobel Prizes, one in Physics (1903) and one in Chemistry (1911).

Explanation

Linus Torvalds is the creator of Linux, an open-source operating system kernel 

He first released in 1991.

Explanation

George Stephenson is credited with inventing the first successful railway engine, known as the Locomotion No. 1, in 1814.

His later model, The Rocket, introduced in 1829, 

Explanation

Vasco da Gama, a Portuguese traveler, was the first to discover the sea route to India in 1498