Negative effect of a rapid change in an ecosystem?

Which best describes the“brain trust” franklin roosevelt promised to make part of his administration? a group of america’s most successful businessmen, who would fix the economya group of hoover’s economic advisers, who would undo previous damage to the economya group of smart advisers, who would assist roosevelt in guiding the nation forwarda group of military veterans, who would assist roosevelt in putting americans back to work

Describe some effects of the rise of communism in the soviet union?

Which diagram provides an accurate example of how the government uses open market operations?