You needed capital controls, so people could not easily move their money from one country to another.
But the standards vary from one country to another, forcing toymakers to deal with a patchwork of regulations.
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Now people who move from one country to another simply enlarge their social networks, building truly global communities.
The Arab Spring rolled from one country to another as their citizens saw that the unthinkable was possible.
It would also mean that there would have to be enormous transfers of money from one country to another.
More people will move from one country to another, because they want to or because they are forced to, Guterres said.
How much their pensions pay, compared to how much they made while working, also varies greatly from one country to another.
Are the young people you meet on your trip all the same, or are they different from one country to another?
We are chasing the Roma from one country to another and in Romania their situation has worsened after 20 years of democracy.
Different, and often diverging, points of view are being put forward and the answer to the question differs from one country to another.
For example, a compact disc sent from one country to another is clearly a good, and will incur a tariff as it crosses the border.
We are entering the age of the global Olympian, in which a top-notch competitor can be bounced easily from one country to another like a shuttlecock.
If we have a single currency or a locked currency, the differences come out substantially in unemployment or vast movements of people from one country to another.
Prior to the 1980s every country ran their own border controls and cars often queued for hours to pass from one country to another while officials checked passports.
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For the first time in the world, Orange has been able to interconnect these two mobile networks with different infrastructure to ensuring end-to-end HD voice quality from one country to another.
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This has some similarities to the European Union's system of mutual recognition of member countries' securities regulations although the European approach does not encourage firms to switch from one country to another.
Lastly, cross-border financial integration has spread far enough to channel contagion from one country to another, but not so far as to break the cycle of weak banks and weak sovereigns bringing each other down.
But many of the things that work well in Germany its corporatism, its business clusters, its manufacturing prowess are part of a traditional culture that would be hard, if not impossible, to transplant from one country to another.
So then what metrics is the administration using to evaluate that an uprising in one country is different from an uprising in another country and that the response should be different from one country to another?
As Mr Alani puts it, the network differs from all other militant Islamist movements in its global reach, its focus on very high-value targets and its skill at covering its traces by spiriting agents from one country to another.
The stereotype has giant companies shifting production from one country to another in search of the cheapest sources of labour, without regard for the well-being of either the high-wage workers who stand to lose their jobs or the low-paid ones who will be hired.
Mr Alexander added that the government, together with Germany and France, was putting additional funds into the Organisation for Economic Co-operation and Development, to aid work on establishing global agreements to prevent companies avoiding tax by moving profits from one country to another with a lower tax rate.
"The only way an international airline can fly from one country to another is if there's a bilateral agreement between the two countries -- and that agreement will invariably express that each airline has to be substantially owned and effectively controlled by nationals of their country, " he said.
Analysts tend to ignore a crucial component of current-account flows: U.S. multinationals' selling their products from one foreign country to another.
Medical practice can vary considerably from one European country to another, so content providers must do more than change the language of their websites.
Muslim immigrants make up 27%, with 13 million foreign-born Muslims living in the EU. When migration from one EU country to another is excluded, the percentages are closer, but Christian immigrants still outnumber Muslim immigrants 13 million to 12 million, the study says.
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This could make it harder for people to move from one part of the country to another.
Though the answer to this question can vary from one region of the country to another, the most plausible answer is lack of competition on the supply side and high switching costs on the demand side.
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