But that was the greatest source of conflict in the world today.

They provide the networks with their greatest sources of revenue.

Race is no longer seen as the greatest source of tension in American society.

From 1880 to 1945 coal was the greatest single source of energy for her industry.

It was the greatest source of strength and support for me to keep going.

The greatest source of support is coming from foreign investors.

Once upon a time these sounds had been her greatest source of security.

It is well known for being the greatest source of wind energy in Asia.

Agriculture is the single greatest source of water pollution in the country.

For low and middle income families, their house is also the greatest source of wealth.