California's isolation was largely ended by the completion of the transcontinental railroad in 1869, which connected the state to the eastern United States. This infrastructure development facilitated the movement of people, goods, and ideas, significantly boosting California's economy and population. Additionally, advancements in communication technologies, such as the telegraph, further integrated California into national networks, reducing its geographical and economic isolation.
Matthew Perry ended Japan's Isolation when the US sent him to Japan.
When Japan opened some if its ports to foreign trade their long history of isolation ended. So basically, their isolation (or Japanese isolationism) is what ended.
United States, i believe
isolation
isolation
Portugal
Isolation - 2014 SUSPENDED was released on: USA: 15 November 2014 (Los Angeles, California)
California Surf ended in 1981.
Aero California ended in 2008.
California Republic ended in 1846.
California Sunshine ended in 1980.
California Southern Railroad ended in 1889.