How have scientific developments impacted leadership changes? What about decisions made by politicians?

Prompt: From the Industrial Revolution forward, science has greatly impacted the world around us.

In this essay, examine how science has impacted government formation, change, and policies throughout the 20th century.

How have scientific developments impacted leadership changes? What about decisions made by politicians?

Use examples that range from the Industrial Revolution through the end of 20th century and that come from various cultures.