Final answer:
Romans used the accusative and infinitive construction to create indirect statements in Latin.
Step-by-step explanation:
Romans used the noun and verb forms of indirect statements to convey information or express thoughts that are not in question form. In Latin, the noun form used to create indirect statements is called the accusative and infinitive construction. This construction involves using the accusative case for the subject of the indirect statement and the infinitive form of the verb.
For example, in the sentence I know that the Romans built roads, the noun form of the indirect statement is that the Romans built roads, which is expressed using the accusative and infinitive construction in Latin (scio Romanos vias struxisse). The verb form used in indirect statements can vary depending on the context and the verb being used.