Probably apples.
if you are asking me "what is the most popular berry in Thanksgiving" here is what the most likely going to be or is going to be: the most popular berry is going to be "cranberry" this kind of population of berry for thanksgiving will probably never change.
thanksgiving
Turkey was most likely served at the first Thanksgiving because it was a bird of the new world. Other ripe crops like corn were also at the firs thanksgiving. Typically, any food that represent the "New World" woudl be served at hte firs Thanksgiving.
Depends on your region but usually apples.
mashed potatoes
Turkey
The most popular 'fruit' in the world is of course, the tomato!!! But what is the second most popular (ie, what most people would consider to be a real fruit in the common usage of the word)?
bananas are the least expensive and most popular fruit.
The most popular fruit flavor for ice cream is strawberry.
the most popular dish in Mongolia is mostly turkey. it is very popular ESPECIALLY during thanksgiving.
banana
apples