10. Which of these best describes the decline of the Native American population during the time of European exploration an settlement?
A) A rapid, massive decline beginning with the Spanish conquest of the Aztec Empire
B) A rapid, massive decline beginning shortly after the arrival of Columbus in the New World
IC) A slow, gradual decline beginning with the establishment of permanent European settlements in the Americas
D) A slow, gradual decline following the first smallpox outbreak in the Caribbean

c. I think. European settlers brought over a bunch of diseases

1. government controls industry through policy

2.government is both a consumer and a producer

4. government can use policy t influence economy

i did this!

the earth’s crust is broken into separate pieces called tectonic plates (fig. 7.14). recall that the crust is the solid, rocky, outer shell of the planet. it is composed of two distinctly different types of material: the less-dense continental crust and the more-dense oceanic crust. both types of crust rest atop solid, upper mantle material. the upper mantle, in turn, floats on a denser layer of lower mantle that is much like thick molten tar.

each tectonic plate is free-floating and can move independently. earthquakes and volcanoes are the direct result of the movement of tectonic plates at fault lines. the term fault is used to describe the boundary between tectonic plates. most of the earthquakes and volcanoes around the pacific ocean basin—a pattern known as the “ring of fire”—are due to the movement of tectonic plates in this region. other observable results of short-term plate movement include the gradual widening of the great rift lakes in eastern africa and the rising of the himalayan mountain range. the motion of plates can be described in four general patterns:

collision: when two continental plates are shoved together

subduction: when one plate plunges beneath another (fig. 7.15)

spreading: when two plates are pushed apart (fig. 7.15)

transform faulting: when two plates slide past each other (fig. 7.15)