1. Abraham Lincoln
Abraham Lincoln is the highest ranking US president of all time. He served as the 16th president from 1861 until 1865. He led the Union through the Civil War and most importantly, started the process of abolishing slavery. He set the grounds for ending slavery with his groundbreaking the Emancipation Proclamation in 1863, which changed the status of slaves in the South to free people. It was his mission to add the 13th amendment to the constitution, which would officially outlaw slavery in the United States. Sadly, it was only passed after Lincoln’s assassination in 1865. A number of different polls show that Lincoln is the most admired US President of all time.