how did he die?
He was assassinated.
Abraham Lincoln
Booth hatched a plot to assassinate the President. When Booth learned of the Lincolns' intent to attend a play with General Grant, he planned to assassinate Lincoln and Grant at Ford's Theatre. Lincoln and his wife attended the play "Our American Cousin" on the evening of April 14, just five days after the Union victory at the Battle of Appomattox Courthouse. At the last minute, Grant decided to go to New Jersey to visit his children instead of attending the play.

At 10:14 pm, Booth entered the back of Lincoln's theater box, crept up from behind, and fired at the back of Lincoln's head, mortally wounding him. 
who was william h. seward? He was United States Secretary of State, and earlier served as governor of New York and as a United States Senator. where was he born? Village of Florida which political party did he represent? Republican Party when did he become the governor? January 1, 1839 has he done a campaign for any other leader? Yes, for  Lincoln when did he become the president of america? 1861 whom did he defeat in the election? UNANSWERABLE what were his views on politics? To resolve ongoing political power struggle between Whigs and Democrats.
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Abraham Lincoln [SEP] Assassination
At the last minute, Grant decided to go to New Jersey to visit his children instead of attending the play. At 10:14 pm, Booth entered the back of Lincoln's theater box, crept up from behind, and fired at the back of Lincoln's head, mortally wounding him. Lincoln's guest Major Henry Rathbone momentarily grappled with Booth, but Booth stabbed him and escaped. After being attended by Doctor Charles Leale and two other doctors, Lincoln was taken across the street to Petersen House. After remaining in a coma for eight hours, Lincoln died at 7:22 am on April 15. Stanton saluted and said, "Now he belongs to the ages." Lincoln's flag-enfolded body was then escorted in the rain to the White House by bareheaded Union officers, while the city's church bells rang.