The correct answer is letter D. an economy based on trade. The people who migrated to Melanesia developed <span>an economy based on trade. Before the time of currency was used, people back then do trading with their property they own if they want to have something. It's like the same as the barter system or the barter economy.</span>
Scientists found evidence in Rodinia in Antartica.
The Amazon River was placed there for the purpose of draining water
from thousands of streams and rivers all across South America, and
of providing habitat for the thousands of species of insects, birds,
fish, lizards, and plants that live in or near it.
Recently, since the advent of homo humanus ... a unique species
that's always looking for a way to "use" nature ... the river has begun
to be used as a source of water for farming and drinking, as an easy
source of protein, and as a transportation route.
D.16 Just search it up it says 18 so just put closest number to that which is 16
Answer: China, China of South-East Asia made rapid economic growth.