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Who came up with the zebra crossing?

Who came up with the zebra crossing?

Who invented the puffin crossing?

Who invented the puffin crossing?

What did Thomas E. Murray invent?

What did Thomas E. Murray invent?

Did Benjamin Banneker invent anything?

Did Benjamin Banneker invent anything?

Who invented the crosswalk signal?

Who invented the crosswalk signal?

Why did Melitta Bentz invent the coffee filter?

Why did Melitta Bentz invent the coffee filter?

Who created fuses?

Who created fuses?

When was the first ironing board invented?

When was the first ironing board invented?

What was the first item to be invented?

What was the first item to be invented?

Who invented queueing?

Who invented queueing?

Who made the first car engine?

Who made the first car engine?

Who invented the air purifier?

Who invented the air purifier?

Who made the pen in the world?

Who made the pen in the world?

What impact did the gramophone have on society?

What impact did the gramophone have on society?

Who invented the four-way automatic traffic light?

Who invented the four-way automatic traffic light?

When did gas-powered cars become popular?

When did gas-powered cars become popular?

Who invented the highway system in the world?

Who invented the highway system in the world?

What did Chester Greenwood invent?

What did Chester Greenwood invent?

Did teens invent device to remove microplastics?

Did teens invent device to remove microplastics?

Who invented the paddle steamer?

Who invented the paddle steamer?

What are the advantages of the steam engine?

What are the advantages of the steam engine?

Who was the first engine manufacturer?

Who was the first engine manufacturer?

Who made the first wooden clock?

Who made the first wooden clock?

Who was the first robotic scientist?

Who was the first robotic scientist?

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