Americas and Oceania were similar in the way that first they both could developed experienced agricultural practices. Second, they could have their own distinct architecture, art and some other cultural characteristics with any influence from the outside. Third, some external groups sustained their nomadic hunter.-gathering lifestyle. And finally, both of them faced dangers of overpopulation and exposed of diseases they had never been exposed to. They both were different just because they developed large sophisticated societies in isolation merely.
So they can talk about politics and discuss what they think is in the future.
Answer:
The spines protect the cactus from predators eating it.
During the colonial period, the British Parliament used the policy of mercantilism to extract wealth from the colonies, since many of the colonies' main exports such as tobacco were used for trade in other nations.
