What negative thing was brought to the Americas from the Old World that killed up to half of the native Indian population? Group of answer choices

A. boats with sails

B. diseases like smallpox

C. wagon for carrying loads

D. horses for war

first representative government in british america called virginia assembly

roosevelt, a progressive reformer, earned a reputation as a "trust buster" through his regulatory reforms and anti-trust prosecutions. his "square deal" included regulation of railroad rates and pure foods and drugs; he saw it as a fair deal for both the average citizen and the businessmen.