Answer:
We have better technology so we can take some of a dinosaurs DNA and see what era it was from, how long they have been extinct, etc.
Explanation:
The attorney general I believe who started the "red scare" is Robert K.Murray.
You can go to this site to get information on red scare and those involved.
Answer: The war officially ended with the February 2, 1848, signing in Mexico of the Treaty of Guadalupe Hidalgo. Mexico gave up all claims to Texas and recognized the Rio Grande as America's southern boundary.
Explanation: Hope this helped!! :D