What was roman architecture used for?

Roman architects perfected Roman concrete and used it in buildings where it could stand on its own and support a great deal of weight. The first use of concrete by the Romans was in the town of Cosa sometime after 273 BC.

Membership in international organizations is holding the United States back. The USA is a very important power in the modern world and being part of international organizations causes more problems than it solves. Due to partaking in these groups the United States is subject to alliances which could lead us into war and cause financial problems for our country. America needs to leave these organizations in order to focus on fixing and bettering its self.