Answer:
Betzah
Step-by-step explanation:
Betzah is the holiday associated with the Babylonian era (King Zedekiah, Mattaniah).
The Passover is associated with the beginning of the last plague, or the killing of all first born children in Egypt that did not have ram's blood painted on the door posts of the house.
The Shavuot is associated with the giving of the ten commandments (as well as others), which is later on in the Exodus. It is also associated with the book of Ruth later on.
The Sukkot is the feast of shelters, which is supposively for Jews to create "tents" or "temporary shelters" on the roofs of their houses, to mimic the Exodus.
~