have roots in

The custom dates back centuries to slavery and is believed to have roots in West Africa.

These measures have roots in different schools of thought in terms of economic theory.

The wars in Darfur and Somalia and between northern and southern Sudan all have roots in tribal competition for land and livestock.

Or do you think it's an accident that file-sharing and free culture have roots in the free software community?

Many raster-based formats have roots in image formats: A common raster-based image format is bitmap (. bmp).

What the researchers call the "red-sex link" could have roots in humans' biological heritage.

grow out of, have roots in, originate in.

The new proposals have roots in disputes involving two companies.

It's said that "Top Commanders'Qualities Have Roots in Military Schools" .

The methods of observation and experiment have roots in our natural instincts.

They have roots in the way the global economy has worked in the era of financial deregulation.

Toyota's woes have roots in 2001's redesigned Camry sedan, which featured a new type of gas pedal.

The new proposals have roots in disputes involving 2 companies.

All overseas Chinese have roots in China. Many of them have been back to China to trace their roots.

High-profile corruption cases, many of which have roots in the 1990s, are at risk of fizzling out.

Deep-seated attitudes to women have roots in ancient agriculture