The fire at Notre-Dame cathedral on Monday prompted immediate pledges of millions of euros to help rebuild it.
Two spectators were injured in a replay of an accident in 1997 that had prompted pledges of safety reforms.
The killings prompted pledges from the leaders of Japan, South Korea and Spain to continue with plans to expand their involvement in Iraq.
More than five years after the collapse of a bridge in Minnesota that claimed 13 lives and prompted pledges to speed up repairs, almost 70,000 other bridges, or roughly 11% of the total, are still rated as "structurally deficient" by the Federal Highway Administration.
The protests eventually caught international attention, prompting pledges of support.
The dispute turned an ordinary Southern California toddler into an Internet cause celebre, prompting pledges to boycott Archie comic books and several offers of free legal representation.
Whether these incentives are enough to prompt more pledges on a meaningful scale remains to be seen, but Banister says that she and Lev decided to spin the business out of Zivity after launching it on the platform and watching hundreds of its artists begin using it within weeks.
In the aftermath of the Jacobite defeat on 13 February 1692 in an incident known as the Massacre of Glencoe, 38 members of the Clan MacDonald of Glencoe were killed by members of the Earl of Argyll's Regiment of Foot, who had accepted their hospitality, on the grounds that they had not been prompt in pledging allegiance to the new monarchs.
President Barack Obama was prompted to pledge an end to spying on the leaders of allied nations.
Pickering is an improbable place to find what could be the key to solving the leasehold housing scandal, which last week prompted the pledge of a government clampdown.
He led the campaign against government-controlled coverage and the one-day strike by the station's journalists that prompted a pledge from the station's directors to allow coverage of both sides.
