About the book: 2021 / How many thousands of years is a fishhook? Who and when invented the first humanoid robot? Is it true that the trampoline was invented by the Eskimos? When was alcohol invented? Aren't the Australian Aborigines the authors of the boomerang? Did Ancient Egypt really wear ties? Scissors are more than 3.5 thousand years old - this is not a joke?! You will find answers to these and many other questions on the pages of this book, which will tell you about inventions and inventions that came to us from the very and not very distant past, but are still relevant today. Publishing layout saved in PDF A4 format.