What structure did the Romans build that allowed their expression of who they were in the world and what they were trying to do? It was also used as a propaganda device; a representation of the yoke of oxen.

The romans built the Triumphal Arches.

Explanation:

The Triumphal Arche, was a type of architecture structure that was built as monuments in order to conmemorate the victory in battle. Romans would make this monuments for the leaders that led military victories.

Rome has four Arches that are part of the beautiful and outstanding Roman architecture: Arch of Constantine I, Arch of Septimus Severous, Arch of Janus,  Arch of Titus.

They also serverd as a propaganda device of political device such as Arch of Constantine I which, was built with political purposes of presenting Constanine as an example of the victorious Roman leaders.

what do you mean by, "why did it take longer to elect a republican than it did a representative?"