Thread: Please explain mistakes in detail

A number of ancient cultures developed in the huge territory, USSR.

'Number' is feminine noun.
'ancient' is feminine adjective.
'cultures' is feminine plural.
'developed' is past imperfective.
'huge' is feminine adjective
'territory' is feminine noun, prepositional?

Несколькая в античный культуры развивала на громадная территориу, USSR.

the russian sentence is not grammatical. Number in your sentence is an adjective if there even is such a word. I don't even understand what your sentence is supposed to say. Try again, maybe you can fix it. maybe Некоторые античные культуры вместе взятые образовали одну громадную страну, СССР?

Originally Posted by heartfelty

A number of ancient cultures developed in the huge territory, USSR.

'Number' is feminine noun.
'ancient' is feminine adjective.
'cultures' is feminine plural.
'developed' is past imperfective.
'huge' is feminine adjective
'territory' is feminine noun, prepositional?

Несколькая в античный культуры развивала на громадная территориу, USSR.

"A number" in Russian is not a noun it is translated as несколько and it could be an adverb or a numeral (as in here)
"ancient" is an adjective and the gender of an adjective depends on following noun, because culture is feminine, ancient will be feminine too
"territory" is a feminine noun but it looks more like translative case which doesn't exist in Russian I have no idea what case is here but most likely accusative

I think chaika got almost correct translation for your sentence
This is how I would translate it
Несколько древних культур развились в огромную территорию - СССР

please remember that in Russian античный always relates to Ancient Greece and Ancient Rome. So you can't say that античный and ancient are totally equal; ancient can also translate as древний, старый, старинный, etc.