Why is farming so difficult in the african sahel

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.

Which factors slowed population growth in china until the 1300? a. one child policy. b. urbanization c. epidemics. d. warfare

1. describe the concept of the unitary executive. discuss whether this concept is practical.