Ships for transportation and trians also for transportation to go across
B because they both adaptations to protect them
Conquistadors were soldiers or explorers from the either the Spanish or Portuguese Empire that came in search for land & power, gold, and labor.
The collapse of the Indus Valley Civilizations can be attributed to the following factors. One, the trade networks declined and disappeared. This meant less work for traders and manufacturers. Two, changes in geography that caused the rivers to either dry up or change direction Three, the people abandoned the major cities. Four, without trade and access to water, people succumbed to disease and starvation.