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Civil War 1
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Civil War 9
Richard_Nixon - John N. Mitchell - H. R. Haldeman - John Ehrlichman
WIKI List US Wars
List lengths US participation wars
Military history US
List of conflicts US
US Declaration of war
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WIKI List Ongoing Armed Conflicts
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List American Indian Wars
US military casualties
List US World War II battles
Vietnam War
Role US Vietnam War
Century Timelines: 1 2 us hx timeline Afro Presidents & Hx By Year 2000 Years framer HX root List sovereign states 35thBC Century List.Centuries
BC : 40 39 38 37 36 35 34 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
AD : 1st 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21st 22 23 24 25 26 27 28 29 30
Time - Wiki Centuries
The AD/BC notation does not use a year zero; however, astronomical year numbering does use a minus sign, so '2 BC' is equal to 'year -1', '1 BC' is equal to astronomical 'year 0', and so forth.
In the Gregorian system, the Nth century AD ..starts in the year (N-1)*100+1 and .. ends in year N*100, so for example, the 16th century begins on January 1, 1501 and ends December 31, 1600.
However, year order is reversed in the BC era, < so the Nth century BC begins in the year N*100 BC and ends in (N-1)*100+1 BC, so for example the third century BC begins in
300 BC and ends 201 BC.
timeline

Timeline_of_historic_inventions
Electronics
Timeline_of_electrical_and_electronic_engineering
History_of_electronic_engineering
Technology_readiness_level
Anthropogenic
Timeline_of_historic_inventions
List_of_inventors
List_of_inventions
List_of_prolific_inventors
The_heroic_theory_of_invention_and_scientific_development
Outline_of_prehistoric_technology
Logarithmic_timeline
Diminishing_returns
Sustainable_development
List_of_emerging_technologies
Outline_of_prehistoric_technology