What development in commercial air transportation was brought about by the passage of the air commerce act of 1926?

The establishment of columbia as the state capital was important because a) it was located in the heart of the upcountry. b) it was located in the heart of the low-country. c) it was already established as a vital industrial center. d) it represented a compromise location central to most citizens.

Atype of infrastructure that state governments maintain is schools roads libraries parks

What pheonicaian invention, carved using iron tools, allowed their ships to remain stable even in unstable seas?