The 1849 Mass Influx to San Francisco
This page is the CodyCross answer for the clue below from Taking Care of Our Planet, Group 1571, Puzzle 2 (Donate to Good Causes).
Question is: The 1849 Mass Influx to San Francisco
and the answer is: GOLDRUSH
Word Meaning:
GOLD RUSH — (chiefly historical) Any period of feverish migration into an area in which gold has been discovered.
Definitions from Wiktionary.