The answer is 1929 the year the fruit flies got into the citrus fruit
Answer:
i dont see what i am identifying but i will help you a primary source is when information doesnt come from somewhere its weird but like the news, or the newspaper is a secondary source like if you read something off the internet it most likely was information obtained by somebody or something making it a secondary source but from where the information was extracted to make the secondary source is the primary source.
Explanation: