"<span>c. more than two million years</span>" would be the best option, since this usually means the amount of time between when the first humans appeared on Earth and when they developed a system of writing.
<span>The rich soil is good for farming.
The tall mountains provide timber.
The volcanic soil hardens into new land.
The very rugged land makes settlement difficult.</span>
The answer is obv D ......
Mexican Revolution was at 1910
