As Orangecrush has said elsewhere:
Red Kookaburra ball is used in Tests in most nations apart from West Indies & England (Duke) and India (SG). All One Day International matches, regardless of location, are played with Kookaburra balls.
This gives the answer to the first two parts of your question.
And the manufacturing of the balls differ only in stitching process. Also, dukes tend to swing around a bit more than kookaburras. The sub-continent cricket balls are slightly smaller, darker, harder, with a slightly more prominent seam & allows ball to last longer.
