Whats the answer will mark bl

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.

The answer because i don’t know it someone

How was the u. s. economy different from european economies following world war 1?