Which does not describe the columbian exchange and its consequences?
a. corn and potatoes as crops in the americas for the first time
b. horses on the great plains of north america
c. diseases including smallpox in the americas
d. the transfer of people, diseases, plants, and animals between the new and old worlds

Read the excerpt from the history of herodotus, book 2. egypt . . is an acquired country, the gift of the river. this quotation from herodotus, a greek who traveled in egypt, is about how the nile river enabled ancient egyptian civilization to develop and succeed. what specifically was the river’s gift? fertile soil fishing stocks defensive capabilities drinking water

Dalton developed the first model of the atom that showed the structure of the inside of an atom

Explain the importance of carnegie, morgan, and rockefeller on the american political scene of the early 1900's.