1. About 200 million years ago, 2. Cenozoic era, 3. The period between the extinction of the dinosaurs and the present day is called the Age of Mammals or Cenozoic. Mammals appeared on the earth long before the extinction of the dinosaurs
I believe the answer your looking for is D,
The push factors<span> drive migrants out of their countries of origin, </span>pull factors<span> are responsible for dictating where these travelers end up.
</span>Cited evidence: <span>www.globalization101.org/pull-factors/</span><span />
<span>The answer is the second option: James Watt played an important role in the Industrial Revolution by developing a process to making steams enginces a reliable power source. James Watts was a Scotish mechanical engineer and inventor famous by his improvements of steam engines. Today we know from him because the power unit - Watt, was named after him, in recognition of his tremendous contributions to the technology..In 1765 he created a new model of steam engine incorporating a separate condensign chamber for the steam. </span>
Lots of civil wars and the invasions of barbarians like the huns and other tribes brought down the empire since the senator could not get along and refused to fix the problem.
