Europeans carried a hidden enemy to the Indians: new diseases. Native peoples of America had no immunity to the diseases that European explorers and colonists brought with them. Diseases such as smallpox, influenza, measles, and even chicken pox proved deadly to American Indians.
The limits of genomic testing are connected with tracking the possibilities of developing a certain disease. It used to be believed that genes were the most importan responsible factors for causing self-immune diseases, but now it has been prooved that the environment, bad habits and nourishing, among other factors, play a more important role in that aspect.
Answer:
The confederation of the original 13 colonies into one republic was inspired by the political structure of the Iroquois Confederacy,
Explanation:
Initially, the Iroquois Confederacy comprised of 5 independent states. Before the 1500s, the five Iroquois nations dedicated a lot of resources to battling and harming each other. The cost of the war was heavy and their economies were destroyed. The Great Peacemaker thought how the things between them could be made better and to promote peace among the nations. They moved to each of the five nations to discuss their ideas of unity and peace. This idea eas discussed by the founding father of the U.S and in 1988, the U.S senate paid tribute to Iroquois Confederacy for the inspiration.
The answer is A as river valley civilizations relied on rivers as a source of life. River valleys like Egypt, Mesopotamia and Xi, the rivers brought silt and made the soil very fertile, it also brought fresh water and fish to eat. People can also move fast using rivers.
