The Franks and Vanderans have minimal contact with the outside world, primarily through occasional trade of goods with neighboring communities. Both groups prefer to maintain their isolation and self-sufficiency, limiting their interactions with outsiders to essential needs or rare visitors.
a radio
The Franks used Miep and Mr. Krawler and other helpers but those are the main helpers as their channel for information. She would bring in newspaper and other news that could be vocally transferred, keeping the Franks updated to new things happening in the outside world.
Mali had contact with France.
Dussel tells the Franks and Van Daans about the deteriorating conditions outside, such as food shortages, bombings, and persecutions of Jews. He also updates them on the progress of the war and the Allied forces' advances.
Miep
because It had some contact with the outside world. This would include thespice TRADE and when colonizing some of world.
I don't have a clue so don't ask me :-)
they wanted to limit the contact with the outside world
China often prevented outside contact to preserve its culture. China alternated between trade and extreme isolationism.
The fetus will not come in contact with our water. It floats in it's own. Your body protects it from the outside world.
As there are huge numbers of people in China who have had little or no contact with the outside world, it is probably Beijing.
Being remote and hard to get to, it would have little contact with people elsewhere.