Where does kiribati( gilbert islands) located?

Which two following best identify the central themes of this speech in the passage the man in the arena

How does rain water cause erosion and deposition? a. when acidic water soaks into the ground, water dissolves limestone, resulting in the formation of caves.b. when a river overflows it moves downhill resulting in the formation of caves.c. when it rains, water flows into rivers and streams and moves back to land, resulting in the formation of caves.d. when water empties into lakes, sediment is deposited, resulting in formation of caves.

Witch religion first gained poularity as a part of roman empire in the 4th century