<span>To attract international trade by eliminating trade barriers
</span>
<span>The canal cuts across the Isthmus of Panama and is a conduit for maritime <span>trade. The panama has become an instant conduit of business from the Latin America region.</span></span>
Answer: D
Explanation: rivers were an easy access to the ancient cities inside the fertile crescent, this meant trade was extremely dependent on these rivers
I think it is A for they formed a group to fight the whites.
Cyanobacteria, also known as "blue-green algae", are the unicellular organisms which are able to produce oxygen.
Approximately 540 years ago, the atmosphere was very poor on oxygen. Cyanobacteria are thought to be responsible for the oxidization of the atmosphere back then, in an event known as <em>"The Great Oxygenation Event"</em>. As a result, Earth's life forms suffered drastic changes in their composition, as they evolved from being <em>anaerobic</em> to becoming organisms <em>highly dependant</em> on oxygen. The oxygenation of the atmosphere would eventually provide the adequate environment in order for the <em>Cambrian Explosion</em>, or the first diversification of living organisms, to happen.
Marcus Garvey is best known for his activism.
