United States of America (Engine of Progress)

Constitutional Amendments
{{legend|#FFFFCC|Bill of Rights|border=1px solid #AAAAAA}} {{legend|#FFB6B6|Reconstruction Amendments|border=1px solid #AAAAAA}} {{legend|#F9966B|2nd Bill of Rights|border=1px solid #AAAAAA}}

List of US Presidents
1 Died while Vice President.

2 Resigned as Vice President.

3 Died of natural causes.

4 Democrat on Whig ticket.

5 Died while Vice President, not replaced.

6 Assassinated.

7 Democrat who ran on Union ticket with Republican Lincoln.