87 Building a phone charger 500 years ago 2019-10-21T09:18:33.553

85 What would be the best way to get clean, drinkable water in a medieval city? 2016-04-13T00:22:26.100

70 In what war would one modern military vehicle make a difference? 2015-03-18T19:00:56.783

69 Being reborn with your memories - Knowledge is power, but how much? 2017-09-05T13:05:59.280

65 What would be left of a civilization founded in dinosaur times? 2015-03-22T16:05:22.977

63 I travel back in time: how could I know when I landed? 2018-08-03T08:26:20.323

60 From which point on would including a dragon on one side of a historical battle not be an instant victory? 2015-07-31T12:26:05.013

55 Why would a civilization develop a taboo against a highly nutritious food that grows well in its climate? 2020-01-25T23:41:01.923

54 Most useful knowledge from the 30's to understand current state of computers & networking? 2016-12-06T16:05:38.230

50 Would descendants of Earth people stranded on another planet eventually forget about Earth? 2017-01-17T20:54:41.313

46 Time Warp: Modern chemist as court alchemist 2018-11-28T06:06:35.917

45 What are the primary triggers for the decline and fall of great empires? 2014-09-25T14:13:20.890

38 Is it plausible that a country developed steam engines before gunpowder? 2017-01-20T13:40:19.847

38 What's a possible justification for orcs not taking over the world? 2018-05-13T14:52:07.227

35 How far can a time traveller go into the past before his electrical equipment becomes unchargeable? 2014-12-20T17:19:32.213

32 How recently could a god be born? 2018-02-05T14:53:40.410

31 What would modern IT look like if Silicon Valley had been completely destroyed in 1985? 2016-02-08T05:12:08.120

31 At what point in European history could a government build a printing press given a basic description? 2019-05-24T20:33:37.043

31 At what point in time would humans notice a 21st century satellite observing them? 2019-11-07T16:08:18.260

28 Can there be a space age without petroleum (crude oil)? 2017-04-13T12:40:52.867

26 How do you layer history? 2015-01-06T20:49:26.117

23 What kind of historic event would precipitate a worldwide corporate dystopia? 2015-12-07T15:11:46.217

23 What advice could a time traveller give for use of an atomic bomb to end WW2 while minimizing loss of life or later nuclear brinkmanship 2015-12-22T19:42:36.437

22 Can Feudalism Endure Advanced Agricultural Techniques? 2016-10-24T18:49:11.827

21 Introducing money to a barter based economy 2016-08-09T20:27:21.100

21 What's the ideal era for harvesting resources by an advanced society? 2018-10-26T02:04:32.020

21 Are there examples of rowers who also fought? 2019-06-14T18:30:27.190

20 An Undercover Army 2019-03-07T04:13:54.990

19 Population Range for a Booming/Dying Frontier Town 2014-09-17T11:45:41.727

19 Would 100-200 years be sufficient to "erase" past atrocities? 2015-04-06T13:15:45.977

19 How long does it take for a fact to become a legend? (In a medieval setting) 2016-11-23T16:33:13.217

18 Why would people not settle an open plain? 2017-05-23T17:51:08.177

16 Balancing science and history when building a world 2016-02-07T01:25:49.823

16 Online character generation resources: types of occupation throughout history 2016-02-22T21:11:47.960

16 What would the Soviet Union have looked like if Trotsky was in power, not Stalin? 2016-10-06T16:34:06.737

15 For how long could a modern tank survive in a past war? 2015-04-22T16:09:50.503

15 If Jesus performed miracles today, how could we convince the people of 4000AD that they happened? 2015-08-28T21:47:59.113

15 Methods for creating great people for your world's history 2016-02-17T21:14:16.233

15 How could the Empire of Japan and America be allies in WWII? 2019-12-02T21:02:53.380

14 What will remain from an eco-friendly civilization after 10,000 years? 2014-11-06T19:12:16.650

14 What is the most befitting place to drop 'H'itler bomb to score decisive victory in 1945? 2016-10-07T00:33:54.713

14 Is the Pike Square formation truly invincible? 2017-09-04T22:59:12.440

14 How would one develop a transistor in a medieval setting 2018-05-19T13:06:34.657

14 How can I prevent the Christian schism of 1054 in order to create a more unified church? 2019-01-12T15:20:44.110

13 Is psychohistory a practical leadership tool? 2016-02-17T21:45:06.490

13 Ideal Firearms for time travel or low tech universe exploration 2019-11-12T03:05:06.880

12 Can the present human understand people in the past verbally? 2015-03-31T10:05:01.200

12 The Magical British Government: At War 2015-04-04T19:16:25.730

12 What would a modern civilization look like if they aren't allowed to write? 2018-02-05T00:14:21.833

12 Where can I learn more about 1700 era boating? 2018-03-18T01:19:08.373

12 Why is old stuff good? 2019-04-23T11:15:56.170

11 Why would the Old Gods retreat? 2015-06-08T22:54:18.417

11 How can I keep the state of Muskogee independent? 2017-02-11T21:37:13.527

11 Non-Mongol Steppe Nomads 2018-09-03T16:58:47.377

11 Could we use telescopes and mirrors in space to see crime in the past via analog? 2018-09-05T03:42:23.187

11 Finding real world historic examples of cultures/organizations/tribes to represent Elves 2018-10-04T20:40:04.633

10 Unifying two empires? 2014-11-13T18:01:02.437

10 What is the ideal time period for 'forgotten history' novels/stories to take place and still end up with our history? 2015-01-06T00:19:12.057

10 Ancient tanks of war 2015-03-23T14:59:15.640

10 What would happen if Napoleon had won the battle of Waterloo 2015-05-05T13:42:51.470

10 How will people and cultures behave if they can have no certainty about their origins and history? 2015-09-18T13:12:40.363

10 What prosthetics would be suitable for a rural aristocrat in history? 2017-04-10T15:05:30.553

10 How could a triumvirate remain stable as a political entity over the long term? 2018-12-26T15:39:52.597

9 What would the impact of a global and unchallenged empire be on world history? 2014-10-30T23:26:31.613

9 What factors would influence a cultures scripture to be written either left to right, right to left etc? 2017-08-01T04:07:55.780

9 Can a star with a large habitable zone have two planets revolving each other as they revolve around their star,? 2018-10-16T23:05:59.530

9 Leaf-based clothing: Practical? Historical? Fictional? 2019-03-12T20:53:20.200

8 What if the Islamic religion was never founded? 2015-07-16T18:24:00.903

8 What is a realistic version of an American fighting with the Russian troops in World War II? 2016-03-22T06:17:50.730

8 How would early astronomers prove the existence of a spherical firmanent around the Earth? 2017-04-13T09:43:39.193

8 How fast did the news travel at the height of the Mongol Empire? 2017-11-14T01:41:57.300

7 Why would Government want to fund time travel program to witness shameful history in the making? 2015-11-09T01:52:30.480

7 What would the British have done in Argentina and the surrounding area if they had been victorious in Buenos Aires in 1807? 2015-11-16T01:18:18.400

7 Creating a Classical civilization 2016-04-01T18:31:18.753

7 What will "history" be in 10,000 years? 2016-07-27T08:10:34.773

7 Advantages & Disadvantages of Allowing Freedom in Local Law in an Empire 2016-09-19T04:14:54.470

7 Camel guns/ zamburak 2019-02-04T13:56:07.993

7 Is it possible for a country to develop the equivalent of a Second Industrial Revolution while under a war of attrition? 2019-10-10T15:15:06.480

6 How Would Warfare Change if Everyone has Horses? 2015-02-13T13:56:09.383

6 Who would be the best candidate to revive for the development of the current world? 2015-05-29T10:44:56.827

6 "The American British Colonies Support Great Britain in the War Effort!" 2015-09-15T03:15:48.133

6 Impact of a Nimitz-class carrier in hypothetical past wars 2015-12-20T08:31:27.227

6 How would historians remember the Extraplanetary Wars from a neutral standpoint? 2016-04-14T23:44:17.590

6 How were swamps drained in early modern/colonial societies? 2016-06-15T14:04:17.233

6 How many countries could theoretically exist in North America? 2016-09-13T15:26:20.603

6 France wins the 7 Years War 2016-09-14T21:48:23.560

6 How to prevent time travelers from developing god complex? 2016-12-30T03:48:44.447

6 How unlikely is it that Hawaii was discovered by Old World explorers? 2018-01-16T01:55:10.120

6 Imperial Kingdoms? 2018-04-22T20:13:14.653

6 A magic system at least partially based on the real-world cultural history of magic? 2018-10-11T21:26:39.150

6 What unexplained historical events or disasters could a kaiju have been responsible for? 2018-10-12T14:30:09.473

6 Can agriculture and megafauna coexist? 2019-11-20T04:07:35.590

5 What would be the consequences of an exploratory group discovering a more advanced civilization? 2014-10-09T23:02:31.400

5 What would be a good reason for having LOTS of sheep? 2015-06-01T14:16:23.690

5 Sending a book to the past to give humanity artificial light technology 2015-12-23T17:19:33.287

5 How would people with the wisdom of the 7th century describe or explain tectonics 2016-09-16T10:39:34.020

5 How to design puzzles for an ancient period in Earth history? 2016-10-25T22:42:53.527

5 How I explain New France not having their Middle East? 2016-10-29T19:09:21.273

5 How do I prevent the collapse of Francia 2016-11-28T20:22:16.160