Where was the worst tornado in the world?

Question

when was it?

what was the damage?

What changes in policies or procedure changed because of it:

Answer 1

the one you don't escape

Answer 2

On March 25th, 1925, a single tornado tore through three states in the U.S. midwest, lasting a record three-and-a-half hours. Starting in Missouri, the twister followed a course along a ridge through Illinois and into Indiana. The tornado reached its peak in Illinois, where it ravaged the town of Gorham, killing or injuring half the residents. It then barrelled through a number of other small towns, leaving a total of 689 dead and 1,980 injured. It finally broke up outside Princeton, Indiana.

The deadliest tornado in history ripped through Bangladesh on April 26, 1989. Thirteen hundred people died and as many as 50,000 were left homeless

Answer 3

There was a severe outbreak in like 1925 that is supposed to have caused the worst tornadoes...

Answer 4

The Great Tri-State Tornado of Wednesday, March 18, 1925, crossed from southeastern Missouri, through southern Illinois, then into southwestern Indiana, and was the deadliest tornado in U.S. history. With 695 confirmed fatalities, the tornado killed more than twice as many as the second deadliest, the 1840 Great Natchez Tornado. The continuous ≥219 mile (≥352 km) track left by the tornado was the longest ever recorded in the world. Historians would recognize it as an example of the maximum issued rating of an F5 on the Fujita scale.[2][3]