How did the arrival of the Spanish affect ancient American civilizations?

Why are committees necessary in congress?

Que actos del pueblo simbolizaron el inicio de la revolucion y la caida de la monarquia?

97 points what types of changes have been made in the united states to protect people from earthquakes? a. communities are no longer located along fault lines. b. building codes ensure that structures can withstand shaking. c. warnings go off when an earthquake is expected, and people evacuate the area. d. barriers have been built to prevent flooding by a tsunami.