Songs: Let's Go _____The Way - Sly Fox?

Questions

because of heavy traffic congestion, julius caesar banned all ---------- from rome during daylight hours?

because of heavy traffic congestion, julius caesar banned all wheeled vehicles from rome during----------?

because of the ---------- content of the dead sea, it is difficult to dive below its surface?

---------- are chief export of nauru, an island nation in the western pacific?

bird droppings are chief ---------- of nauru, an island nation in the western pacific?