Answer:
Ellis Island NYC for Europe and San Francisco, CA for Asia.
Explanation:
The thing that brought an end to the bear flag republic was: The arrival of US Troops in California.
The bear flag republic was founded by several hundreds of immigrants in California that rebelled against the Mexican department Government because they're not allowed to buy land in the state.
Russia/The Soviet Union and Nazi Germany
Europe does not have common boundary with South America, North America and Oceania.
