Answer: it is ratified by two-thirds of the U.S. Senate
Explanation:
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.
New technologies like steam engines, railroads, and telegraphs made for communication and transportation easier. The ability to source and transport materials across the country with ease turned many local businesses into national companies.
B. because the government is a great example because there are 3 branches and they all have different jobs