A、In 1809. B、In 1863. C、In 1865. D、In 1860. D信息明示题，文章第三段指出，In l860, Lincoln was elected President of the United States．由此可知D正确

Abraham Lincoln was born in a log cabin in Kentucky on February 12, 1809. When he was a small boy, his family moved to file frontier of Indiana. Here, his mother taught him to read and write.
    When Lincoln was a young man, his family moved to the new state of Illinois. Lincoln had to earn a living at an early age, but in his leisure time he studied law. He soon became one of the best known lawyers in the state capital at Springfield, Illinois. It was here that Lincoln became famous for his debates with Stephen A. Douglas on the subject of slavery.
    In 1860, Lincoln was elected President of the United States. He was the candidate of the new Republican Party. This party opposed the creation of new slave states. Soon after his election, some of the Southern states withdrew from the Union and set up the Confederate States of America. This action brought on the terrible Civil War which lasted from 1861 to 1865.
    On January 1, 1863, during the war, Lincoln issued his famous Emancipation Proclamation. In 1865, after the war ended, the Thirteenth Amendment was added to the Constitution of the United States. This amendment put an end to slavery everywhere in the United States.
    Early in 1865, the Civil War came to an end with the defeat of the South by the North. Only a few days after the end of the war, Lincoln was shot by an actor named John Wilkes Booth. The President died on April 14, 1865. In his death, the world lost one of the greatest men of all time.