How many consuls ruled the government during the time of the Roman Republic from 509-31 BC?

PLEASE HELP ASAP

the right answer for the question that is being asked and shown above is that: "their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful.  " the  participant in european imperialism is being described below is that  their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful. 

hello,

the steamboat is your answer.

it seems like its the only form of transportation on the choices.