Probably fuel. Corn is the biggest agricultural export.
Yes South Africa does export to the USA - it is one of the countries biggest export markets
the biggest export out of japan is vehicles..cars and such..
Copper, apparel, cashmere, wool. Around 32% of the Mongolian exports go to the US, which makes the US the second biggest export-partner (China is the biggest).
coffie is the biggest export i think
oil
Cars
copper
pharmaceuticals
The largest legal export in Columbia is oil.
Dairy
human hair
copper