How did American industrial leaders accumulate wealth during the late 1800s?  A) by inventing new technology B) by developing new farming techniques C) by using mainly slave or forced labor D) by creating monopolies and establishing trusts

D) by creating monopolies and establishing trusts

Explanation:

Monopolies are usually set up in order to eliminate other companies trying to compete with the solely approved company.

This means only one company renders the service and then the returns are always very high and maximal due to zero competition.

This helped them accumulate wealth.

The trust is like a will but it takes effect after it is created unlike the will which takes effect after the individual dies.

A trust helps in the efficient management of one’s property and wealth which also helped the American industrial leaders in the sustenance of the wealth.

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)