Roman Style

I wonder where the names roman blinds and roman style come from. Does it mean that people living in ancient Rome used to have blinds in their windows? Very likely. I know that it can be really hot and sunny in places such as Italy. If people in Italy have blinds, I also started thinking about them. Blinds are not designed for Italians only. A few of my neighbors have blinds. I wonder if they have them get a better sleep. I wonder how much blinds can cost. I hope that they are not too expensive, or I am going to give up on ever buying them.