Is an electric motorhome practical?
Does it cost much to charge at overnight campsites/pitches compared to an ICE and its' fuel, and do vandwellers drive more than 200 miles in a day? If not will it become more practical in the future?
What was the ideal location for a cotton mill during the early Industrial Revolution?
We hear about how places like the area around Manchester had proximity to ports for cotton to be traded, canals and coal to be carried on them, rivers from the Pennines and rain to keep the climate damp and humid for the fabric to not dry or snap but where exactly were the best fast flowing water sources for large-scale hydro-powered mechanised factory spinning?
What if 20th century Leeds got a S-Bahn type system?
Would it be suitable for the Leeds city region before the Beeching cuts or would a Liverpool-style elevated metro be better?
What if the Western Allies intervened with enough force to prevent the German victories at Operation Albion and Caporetto?
More extra attacks on the Western Front (Passchendaele, La Malmaison, Cambrai etc or even alternatively with the Americans further southeast) earlier in October for army units to be sent to help Italy and ships to go to the Baltic to shore up Russian capabilities against the Central Powers
What if the United States entered World War I in 1916 after the numerous acts of Imperial German state-sponsored terrorism since 1915?
There were maritime incidents but there was also Black Tom, Vanceboro, Harbor Island, the Muenter attacks and the Dilger sabotage program which also targeted other neutrals like Romania, Norway, Spain and "South America" (says Wikipedia) to name a few, at least America could have started preparing the army earlier to be ready to fight before at least Russia getting knocked out in 1917-1918