Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.

How many avulsions have occurred in upland areas or actually just the past 6000 years?
How many avulsions have occurred in the past 6000 yeas?

How long did Warsaw last as the capital of the Russian oh no not Russian but the Polish-Lithuanian Commonwealth?
How long was Warsaw the capital of the Polish-Lithuanian Commonwealth?

Who was a man studying medicinal applicants of plants in Modern Greece no sorry Ancient Greece?
Who was a man studying medicinal applicants of plants in Ancient Greece?