But increasingly their differences are seen as a source of strength rather than a weakness to be overcome.
First Minister Peter Robinson said he hoped any problems with access would be overcome.
The courts finally ruled in favor of redactions (which could easily be overcome if Congress wished).
That can be overcome by building the fastest system in the U.S. and operating it well.
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The UK faces huge challenges which can only be overcome by working together, Mr Miliband said.
But, Ben says, it also stated that these sins could be overcome with restraint and repentance.
This antipathy can be overcome, but only when elephants provide surrounding peoples with a monetary benefit.
That, in my world, is a real challenge, but one that can, with logic, be overcome.
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There are significant social, cultural and institutional challenges that must be overcome as well.
One of the biggest hurdles that has to be overcome is emissions from transport.
More details may emerge in mid-December, but the difficulties to be overcome are huge.
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There is certainly much more to be done and many challenges to be overcome.
Fitting mirrors around the nanocrystals is thus one problem that needs to be overcome.
In most countries, these dangers could be overcome by a transparent sale to the highest bidder.
India's reluctance might be overcome if, say, rich countries moved smartly to open their textile markets.
If these two obstacles can be overcome, Wikipedia's already tremendous potential will be even more amplified.
If these difficulties can be overcome, though, the future looks bright to all involved.
Over time, he felt, its biggest disadvantage, high cost, was sure to be overcome.
The second paradigm that needs to be overcome is how and where technology is consumed.
The long-term downtrend in the RS line, line f, needs to be overcome to confirm a bottom.
It risks taking us back to the 1930s, when the Depression took two full decades to be overcome.
All that has to be overcome now is the natural disinclination of chief executives to dismantle their empires.
Reading Borough Council said it doubted planning issues over the application could be overcome and rejected the plan.
At such a minute scale, everyday forces such as gravity are not the main obstacles to be overcome.
That, at least, might be overcome by the direct election of a local personality to run local services.
Tapping it will, however, require both technical and economic hurdles to be overcome.
This needs to be overcome to signal that a bottom is in place.
But this problem could be overcome by making a coating with self-healing properties.
These suggestions are not much different from reforms enacted in Australia, which suggests that practical obstacles can be overcome.
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The best thing about courage is that a lack thereof can be overcome.
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