The accuracy of his maps made building the line much easier.

To make building these services easier, Microsoft is developing a collection of software tools for programmers, called .

There is no agreement with Afghanistan, and the country's mountainous territory would make building a pipeline difficult.

"You shouldn't make building a house a trip."

But local opposition would make building them a nonstarter.

The Bush proposal would effectively make building new electric plants impossible, and even operating old ones at full power would be barred, the company said.

The size of the Syracusan defenses made building a circumventing wall impractical.

They chose to use cheap hardware, which made building a large system a cost-effective process.

Even simpler tools are available that can make building a home page as easy as filling out a form.

But many communities have adopted zoning rules that make building new towers very difficult.