<span> Popular sovereignty is the principle that provides for a system in which the government derives its power from the governed.</span>
Before the steamboats, man had only the power of muscles (whether his own muscles or the muscles of animals). He depended on these muscles in transportation. This made transportation a very long and tiring journey.
Steamboats' main advantage was providing faster transportation to both people and goods. This reduced the time and the effort needed for transportation.
However, they were not very safe or accurately designed. Many people died as a result of the explosion of the boilers.
Answer:
The committees of correspondence were shadow governments organized by the Patriot leaders of the Thirteen Colonies on the eve of the American Revolution. They coordinated responses to England and shared their plans; by 1773 they had emerged as shadow governments, superseding the colonial legislature and royal officials. The Maryland Committee of Correspondence was instrumental in setting up the First Continental Congress, which met in Philadelphia. These served an important role in the Revolution, by disseminating the colonial interpretation of British actions between the colonies and to foreign governments. The committees of correspondence rallied opposition on common causes and established plans for collective action, and so the group of committees was the beginning of what later became a formal political union among the colonies.
African slaves often used Christian hymns to communicate. The slaves used these hymns in order to communicate coded messages to each other about their conditions, and possible avenues for escape. The slaves' overseers thought that the slaves were simply singing religious songs and were not able to recognize the messages hidden within these songs. These hymns had an influence on the later musical style of the African American spiritual.
The Aztecs and the Mayans were two ancient societies in Meso America. The Mayan civilization goes back to about 1800-2000 BC and was in decline when the Spaniards arrived whereas the Aztecs were a much younger civilization that was at its peak when Cortez arrived. The Aztecs were located mostly in what is now Mexico whereas the Mayans were more in what is now Guatemala and Honduras. Both the Aztecs and Mayans believed in human sacrifice but the Aztecs did this much more than the Mayans. While the Aztecs layed out their cities according to celestial observances, the Mayans were more scientific and developed a calendar very similar to our modern calendar. The Aztecs had one supreme ruler whereas the Mayans had many city states like Uxmal in Guatemala and Copan in Honduras with local rulers.
