US cellphones will get signals in foreign countries if and only if your provider has collaboration with any provider in that company in that foreign country.This is called "International Roaming".
countries that surround France are :GermanySpainItalyBelgiumLuxenbourgSwitzerlandSeas that surround France are:Bay of biscaythe English channel
No foreign country owns any part of a US state.
congress
The states people cannot trade with foreign countries or travel to foreign countries.
The US offers foreign aid mostly to support struggling democracies and countries that are critical to foreign policy objectives is true.
Gas
Some countries are similar in gun violence to the US, and other countries are more pacific.
Thomas Jefferson banned all the trade with foreign countries because British had attacked US ships.
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to fund their production of muskrats
Atlanta Georgia