Complex sentence: In Roman historical tradition, it is said to have originally been worn by both sexes, but as Roman women gradually adopted the stola, the toga was recognised as formal wear for Roman men, and marked their status as male citizens.
Split into simpler sentences: In Roman historical tradition, it is said to have originally been worn by both sexes. As Roman women gradually adopted the stola, the toga was recognised as formal wear for Roman men, and marked their status as male citizens.