If this is referring to the US then it is probably a toss up between the revolutionary war which resulted in the forming of the United States and leaving the UK. as well as teh Civil War which kept the union together vs splitting into 2 seperate countries.
Fourteenth Amendment
The telegraph
television
Fourteenth Amendment
The sinking of the Lusitania had a great impact on Americans in that it turned them against Germany.
civil war
civil war
the Americans
impact was greater for Britain
Zepplins
WW1
Fourteenth Amendment
_There should be a space between 'the' and 'impact' it should read: "What was the impact of World War 2 on US society?" Soz!_
waning support for the war in the US
Rifle
television
The telegraph