Why does Frank characterize Europe as the "caboose" to the "Asian economic train"?

What country aided north korea in the korean war?

Which of the follow modern activities would only have been possible after the neolithic revolution

President of the united states has scheduled a cabinet meeting today to discuss energy policy with specific focus on pollution and global warming. given what you know of the executive branch, which group of attendees would the president most likely expect to provide up-to-date information and expert insight during this meeting?