Answer:
b
Explanation:
try using sorcratic if u have troubles it helps me with questions like that
The trade of goods between the New World and Old World
Command economy is when the government is controlling the price of goods <span />
It's being estimated that dinosaurs lived on Earth from about 237 million years ago to about 66 million years ago. So answers B and D are definately too "old", while answer A is too "young". I'd pick answer C as it's most probable.