It was Great Britain. The South’s economy primarily relied
on agriculture particularly cotton. It
was the cash crop of the South especially with the invention of the cotton gin
making it faster to remove seeds from cotton.
As part of their efforts to gain economic and diplomatic support, the
Confederates opened diplomatic channels with European countries. It had diplomatic talks with Great Britain.
It had a large textile industry and the South had an abundance of cotton
that they can sell to the British to increase their finances. However, the Union used all of it industrial
and military resources against the Confederacy and in the end they surrendered
to the Union.