Dred Scott
John Brown's Raid was the ill-fated attempt of the New Englander to free Virginia's slaves by raiding Harpers Ferry, in 1859.
Yes, the army was unsuccessful in its attempt to drive the British out of Canada.
The team's attempt to launch the product was unsuccessful despite their best efforts.
The Burr Conspiracy was an unsuccessful attempt by former VP Aaron Burr to take over land in the West and form his own country with him as Dictator.
An air shot.
Cheif Joseph
Whatever the Class 6 Felony you are talking about.... it would be the attempt to carry it out, whether you were unsuccessful, or not.
1754
Whiff
Cuba: The Bay of Pigs Invasion
Three attempts at colonization (the Roanoke Voyages) were unsuccessful. The most well known is the 1587 attempt, now known as the lost colony.