Martha Stewart 4-Quart and 7-Quart Enamel on Cast Iron Dutch Ovens, 2 Pack (Red)

Are the lids "self-basting"? Do the lids have dots or ridges on the underside to collect steam?

Are martha stewart ceramic dutch ovens made in the usa?

Where is this product mfg?

How to clean the stains? All the food bits are cleaned but there is still a stain at the level my stew was.