Explanation

The 16th President of the USA was Abraham Lincoln.

He served from 1861 to 1865.

The short list of Prime Ministers of USA:

• 1st. George Washington
• 2nd. Adams John Adams
• 3rd. Thomas Jefferson
• 15th. James Buchanan
• 16th. Abraham Lincoln
• 17th. Andrew Johnson
• 44th. Barack Obama
• 45th. Donald Trump
• 46th. Joe Biden (Current)