The Southern economy and military effort depended on slave labor.

But the effort will depend upon technological advances to make such a plane environmentally and economically acceptable, the agency says.

But all the efforts depend on finding a way to use the Medicaid funds for his care outside an institution.

For decades, the effort to contain the spread of nuclear weapons has depended on several assumptions.

That effort depends heavily on cooperation from China and Russia, two countries with their own active space programs.

The effort and effectiveness of software tests depends on numerous factors including:

Any hope that this campaign will prove more effective than past failed efforts depends on soldiers' being able to finally move against Shiite militias.

Those efforts largely depend, however, on the vagaries of the dollar.

The effort depends mainly on finding youthful-looking police cadets to volunteer.

His early efforts depended on using muons, which are heavy, short-lived versions of the electron.