• the Americas were less densely woven than in the afro-Eurasian region. There was no equivalent to the silk, sea, or sand roads. • Spread of agricultural products was slower and less pro owned on the Americas • Spread of distinct cultural traditions like Buddhism, Christianity, or Islam · Americas did have zones of interaction • River networks of North America, where commerce plays an important role in regions where contact was possible, the dense communication lays between rather than within the regions that housed the two great civilizations of the Western Hemisphere- mesoamerica and the Andes.
Answer:
Negative
Explanation:
Aerosol -
It is the suspension of the solid or liquid particles in the air , is known as the aerosol .
The effect of aerosol is , that it reduces the amount of the solar radiations incident on the surface of the Earth , and due to this capacity to reflect the solar radiations , it has a negative impact on the Earth .
As we known solar energy are of huge importance for the human beings .
Hence , the answer is negative .
The first one should be it
