Researchers have increasingly tried to use these biomarkers to identify people who are at high risk of developing heart disease.

VOA: special.2009.07.15

The Army of the Potomac the strongest of the Union armies had tried to seize Richmond, the Confederate capital.

VOA: special.2009.09.24

The Ecuadorian government has tried to enforce severe limits on the number of Ecuadorians who move to the islands.

VOA: special.2009.12.16

Emperor Norton's decree said John Brown had tried to capture the state of Virginia with only seventeen men.

VOA: special.2009.12.14

Early the next morning, Lee tried to break through the ring of Union soldiers that surrounded his army.

VOA: special.2009.12.24

While he waited for an answer, the Spanish naval force tried to break out of Santiago Harbor.

VOA: special.2010.07.15

Confederate doctors treated their own men, then tried to help the wounded soldiers of the other side.

VOA: special.2009.09.24

He tried to show that his Democratic Party was a national party, while the Republican Party was a party only of the North.

VOA: special.2009.06.11

They were tried in federal courts. Juries were made up mainly of blacks and radical whites.

VOA: special.2010.02.18

Too many of his small force would be lost if he tried to fire these guns.

VOA: special.2009.08.13

He tried to show them how little he thought of them and the studies they taught.

VOA: special.2009.04.04

Whenever possible, he tried to show that he was a man of the people, like Lincoln.

VOA: special.2009.06.11

So Murlock tried to take care of his wife and return her to good health.

VOA: special.2009.10.31

Many tried to put their feelings into words. Walt Whitman wrote several poems of mourning.

VOA: special.2009.12.31