Answer:
Asia, Europe, the Middle East, and Africa
Explanation:
North and South America, Australia, and Antarctica are not the Old World.
Sorry people keep sending you links to stuff :/
PEMDAS. (-4) - 18 - (12 + 3)
1. Parenthesis, simply what's in them.
(-4) -18 - (15)
2. Combine like terms.
-4 - 18 - 15 = -37
Hope this helped.