Answer:
polio
Explanation:
Frida Kahlo caught polio in 1913, aged six, and had to spend several months in bed. The paralytic form of the disease was not badly disabling, however, it did have some unavoidable consequences – her right leg remained slightly deformed and shorter than her left leg so she had to wear built-up shoes
Answer:
United States/Soviet Union
Explanation:
they were basically having an argument about who had the best and most powerful bombs.
The researchers kept their identities secret because, if they had revealed that their purpouse was to conduct an experiment on the behaviours of the people in the bar, it might have triggered that some people changed their usual attitudes because they know that their 'figures' will be kept in a record.
Maybe some people will drink less as they feel embarrased if some other person is testing how many beers they end. Others, might want to prove themselves 'strong' and drink much more than usual. People change their behaviour sometimes when they are aware that they are watched. This is called the observer effect.