That can have several answers.
The strongest (though not necessarily the largest) tornadoes are EF5 tornadoes with estimated winds over 200 mph.
The strongest tornado recorded (or at least to have its wind speed measure) had winds of 318 (some say 302) mph.
The widest tornado ever recorded struck Hallam, Nebraska tornado in 2004. It was 2.5 miles wide.
The largest tornado ever recorded was the El Reno, Oklahoma tornado of May 31, 2013. This tornado was 2.6 miles wide. Doppler radar measured a wind gust in the tornado at 296 mph, the second highest wind speed ever recorded in a tornado.
The highest death toll of any recorded tornado in the U.S. is 695. This is from the Tri-State tornado of Mach 18, 1925. However, scientists have estimate that an extremely large, violent tornado that impacts a major city or crowded freeway could potentially kill thousands.
The largest tornado on record in the U.S. varied in speed. For the early part of its time on the ground it traveled at about 30 mph before suddenly accelerating to 55 mph.
The Highest wind speed ever recorded in a tornado was 302 mph (some sources say 318 mph) in the F5 tornado that struck Moore and Bridgecreek Oklahoma on May 3, 1999. This tornado is sometimes referred to as the Oklahoma City tornado
The first recorded tornado struck near Kilbeggan, Ireland in 1054. Available records do not mention if there were any deaths. Keep in mind that most tornadoes do not kill.
Hattiesburg
The first recorded tornado in the US was in Rehoboth, Massachusetts in August of 1671.
No. The largest tornado ever recorded hit Hallam, Nebraska in the United States.
The largest tornado in Oklahoma (and in fact the largest tornado ever recorded), was the El Reno, Oklahoma tornado of May 31, 2013. It was 2.6 miles wide.
The largest tornado ever recorded was the Hallam, Nebraska tornado of May 22, 2004. At one point this tornado was 2.5 miles wide.
The largest tornado ever recorded was the El Reno, Oklahoma tornado of May 31, 2013. This tornado was 2.6 miles wide. Doppler radar measured a wind gust in the tornado at 296 mph, the second highest wind speed ever recorded in a tornado.
The Waco, Texas tornado of may 11th 1953 killed 114 people and injured 597
The widest tornado ever record, the Hallam, Nebraska tornado, killed 1 person. The strongest tornado ever recorded (fastest winds measured), The Moore F5 of May 3, 1999, killed 36 people. The worst (deadliest) tornado ever recorded, the Daulatpur-Salturia in Bangladesh killed over 1,300 people.
No tornado has destroyed the U.S. At the most, small towns aand sectiosns of cities are destroyed. The first recorded tornado was not in the U.S. but was in Ireland in 1054.
The highest elevation tornado on record in the US was an F0 that hit Sequoia National Park on July 7, 2004. It was recorded at an elevation of 12,000 feet.
The largest tornado even recorded caused about $160 million dollars in damage, but keep in mind this wasn't the most damaging tornado or the strongest. The tornado with the strongest recorded winds caused $1 billion in damage (about $1.3 billion in today's dollars). The most damaging tornado recorded caused the equivalent of $1.7 billion in today's dollars.
The most destructive tornado in U.S. history was the Joplin, Missouri tornado of May 22, 2011. The cost of damage was $2.8 billion.