Maybe churches and cathedrals, but I'm not sure if that's considered institutions.
A bicameral legislature features "<span>D. two legislative bodies," since it is thought that this leads to more inclusive and democratic process. This is the system in the United States and Britain as well. </span>
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.
The correct option is D
The Songhai Empire, also known as the Songay Empire, was a state located in West Africa. Songhai was one of the largest Islamic empires in history. This empire bore the name of its main ethnic group, the Songhai. General Sarakollé Mohamed Ture with the title of "askia". The askia Mohamed I (1493-528) produces the heyday of the Songhay empire. This reign manages to Islamize the songhay kingdom. From his pilgrimage to Mecca, in 1496-97, he returned with the title of caliph, which allowed him to make a real reform of society, according to the advice of the Islamic jurist al-Maghili, and continue the conquests of his predecessor Sonní Ali . He installed a complex bureaucracy, with separate ministries for agriculture, the army, and finance. Appointed a supervising officer for each of them. He was a devout Muslim, founded public religious schools, mosques and opened his court to scholars and poets of the Muslim world.
