If they really are Sweet Potatoes (and not some local variant called a sweet potatoe that is actually a completely different tuber), yes you can.
Sweet potatoes are vegetables.
Sweet potatoes can be cooked in the same way as ordinary potatoes, namely mashes, baked, boiled, roasted or made into chips. They can also be used in some sweet dessert recipes however.
Sweet potatoes are not made from regular potatoes, but grow as a separate tuberous vegetable.
Some examples are: tomatoes, potatoes, sweet potatoes, vanilla, chocolate, pumpkin, etc.
Yes sweet potatoes contain sugar
Yes, both white and sweet potatoes are grown in Cuba
Only some sweet potatoes are orange; orange varieties are often labelled yams, despite the existence of the real yam. For the most part, sweet potatoes are as white as regular potatoes are, but other colours include yellow and purple.
a dog can eat sweet potatoes
Beta and alpha carotenes are found in sweet potatoes.
Yes, sweet potatoes are grown in Asian countries.
No. They are two different types of root vegetable. Sweet potatoes are sweeter and a darker color than yams.