Answer:
The "grave danger" that the author is talking about is the danger of atomic weaponry
Explanation:
"Preliminary Statement of the Association of Manhattan District Scientists" was a 100-page report written after the atomic bombings in Hiroshima and Nagasaki.
The "grave danger" that the scientist is talking about in the article is the dangers of atomic weaponry. The article talks about the consequences that wrong decisions of leaders may have on its nations.
Answer:
They both created accurate calendar.
Explanation:
Cuneiform is one of the earliest writing system developed in Mesopotamia. The Maya calendar based on the Sun, the Pleiades star groups, the Moon, and other planets. The Mayan and ancient Mesopotamian civilizations both had calendars.
Answer:
The anti-imperialists opposed the expansion because they believed imperialism violated the credo of republicanism, especially the need for "consent of the governed".
C.) It is a secret route that slaves took to escape from Southern slave states to the North. Even though Harriet Tubman started this, it wasn't to help slaves become free it was to help them escape so it's C
