Question

Why were the miners who looked for gold in California called the 49rs?

Answer 1

because they all rushed to California during 1849.

Step-by-step explanation:

during the California Gold Rush, people moved to California from across the country AND across the world. This movement began in 1849, hence the name "forty-niners"

Answer 2

Miners were called 'forty-niners' because they moved to California en masse in 1849 as a result of the California Gold Rush.