What was the name of the original Celtic festival from which Halloween was born?

The 2017 top trending costume according to Google is...

The Awuru Odo Festival marks the return of dearly departed friends and family members back to the living. In what country does it take place?

In which country is Dracula's Transylvania home located?

In which country did Halloween originate?

What vegetable was originally used for carving jack-o-lanterns?

What Mexican holiday is known as a time to remember family and friends?

When the Romans conquered the Celtics, they introduced the Pomona holiday. What fruit symbolized the holiday, and what current Halloween tradition did it lead to?

People put their knives away in this country on Halloween, because they don't want to risk harming "returning spirits".

Which animal is a top trending costume for 2017?

In what country does the Buddhist Pchum Ben holiday celebrate the dead? People give foods like sweet sticky rice and beans wrapped in banana leaves, and visit temples to offer up baskets of flowers as a way to pay respect to the dead.

Which large fruit is carved to make jack-o-lanterns?