Number 19 - They spread the plague with their bad hygiene

There are so many inaccuracies in this section I barely know where to start.

Firstly the “Black Death” most probably began in Central Asia (where it still exists to this day)

Secondly the plague was caused by a the bobac variety of mormot, which passed it onto the fleas of the brown rat.

Thirdly between 75 and 100 million people died because of the plague not 35 million as stated by Mr Grasse.

Fourthly hygiene cannot, did not and will not spread the plague, if it did why did so many people die in areas where there were (comparatively) few rats, this was because the fleas travelled in cloth that was transported to these areas.

Lastly “lathering up with soap and water” as Mr Grasse condescendingly puts it would not stop the disease, the only way people can survive the plague (or more correctly the bubonic plague) is by targeting the infection with antibiotics (aminoglycosides streptomycin and gentamicin, the tetracyclines and doxycycline and the fluoroquinolone ciprofloxacin) and as antibiotics weren't available until at the 1890's, that's 540 years too late for the poor unfortunate people that died.