Answer:
Veterinarians are people who diagnose, prevent and treat diseases for pets, thereby contributing to the protection of public health. Besides, engineer veterinaryis also a position similar to veterinarian, at the same time researching and experimenting in veterinary fields such as: animal husbandry, pet food, medicines, vaccines for for pets…
The event led to a rapid population increase in California in the late 1840s is the discovery of Gold in California. Due to the discovery of Gold a lot of people like miners and traders settle in California and thus starting the Gold Rush in late 1840s. Also due to the Gold Rush in California a large number of foreigners and people around the globe flocked in California for gold.