The statement which describes the idea of Manifest Destiny that affected demographic changes in the United States during the 19th century is '' It resulted in large numbers of white Americans relocating from east to west''
Answer: Option A
<u>Explanation:</u>
The Manifest destiny was a doctrine that said the United States of America is destined to spread and expand it's territories from the Atlantic coast to the Pacific oceans.
This also justified why the United States had acquired other nations of the workday. This made the country very strong and attracted a lot of people from the east side to the west side because of better living standard and that is was superior to other regions of the world.
Cataracts caused parts of the riverbed today out.
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.
Your answer is B: A Bill of Rights and an announcement they would establish a republic based upon hope this helps :D