Have these physical features changed? If so, how and what keeps people in this place today?

What greek scientist created a screw to move water for irrigation?

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

Name that largest artificial lake built in the 11th century