In 1848 there was 10,000 people living there and at 1849 their gold rush attracted many people and they zoomed from 14,000 to 100,000.
weenboob
74 groups
The gold rush.
california, your mom, and santa
Most Okies migrated to California
California
Uh, I think one of them is the gold rush. The gold rush in California was from 1848 to about 1854 and loads of people migrated to California because of it, so probably this was one of the reasons?
You don't say who "these groups" are but the correct answer is California, Nevada, and Utah and parts of Arizona, Colorado, New Mexico, Utah, and Wyoming.
Gold.
In the year of 1848.
Gold.
Gold.