After the mexican war and the california gold rush

After the Mexican war and the California gold rush, THE HUMAN POPULATION OF WESTERN US INCREASED TREMENDOUSLY. For instance, about 200,000 people were added to the population of California in about five years after the commencement of the gold rush. The Western part of the United States as a whole experienced growth in term of population, boundary expansion and trade.

C. it's a true fact. i know because we are studying about the great depression. so it best illustrates a claim of fact. thx. have a wonderful day!