Question

Found evidence that the continents were joined together at one time.

Answer 1

Alfred Wegener

Explanation:

In 1912 Alfred Wegener (1880-1930) noticed the same thing and proposed that the continents were once compressed into a single protocontinent which he called Pangaea (meaning "all lands"), and over time they have drifted apart into their current distribution.

Answer 2

Alfred Wegener, is who proposed the idea of Pangaia