Answer:
observable
Explanation:
In order for an experiment to succesfully take place, the experiment must be controlated, observable, and repeatable, this means that under certain circumstances that you are able to control, you can observe an event and investigate it. It has to be observable in order to gain and gather information about the event and with this be able to come up with a conclusion of factor that make it possible and the consequences that the given event has.
Answer:
the gold rush era.
Explanation:
The earliest presence of Jews in America dates back to "the gold rush era."
The gold rush era was around the year 1848 to 1855 in the Sacramento Valley, California.
This tally with the period when the first wave of European Jews first came to America which is around the year 1820. According to the historical records, the population of the European Jews in America at the time was around 3,000
Try this:
https://history.state.gov/milestones/1961-1968/tet
