Walls of limestone were added to which Russian building in 1367?

Explanation:

"The first wooden fortress waserected here nearly 900 years ago by Prince Yuri Dolgoruky. It was the seat of Russia's princes from 1264 onwardsand was replaced with a limestone fortress in 1367 by Prince Dmitry Donskoy. During this time the city was often referred to as 'White-stone Moscow'."

MOSCOW

Explanation:

The first wooden fortress was erected in Moscow nearly 900 years ago by Prince Yuri Dolgoruky. It was the seat of Russia's princes from 1264 onwards and was replaced with a limestone fortress in 1367 by Prince Dmitry Donskoy. During this time the city was often referred to as 'White-stone Moscow'.

in this passage from chapter 6 of "animal farm", by george orwell, what the author is ridiculing in this passage is the frivolity of some rules.

clover, the mare, believes she remembers that the fourth commandment forbade sleeping in beds because it was something that humans did. snowball, napoleon, and the pigs are brain-workers who look after the welfare of the farm. they are the obvious leaders because they are smart, and so they are entitled to eat the best food and sleep in beds. it is squealer, who says these lines making the difference between sleeping with sheets, what humans do, and sleeping in beds, what pigs do. the unwillingness to question authority makes the oppressed to obey without thinking.