Pretty sure it's B because they gained support in the civil war
To study the expansion of voting rights
Answer:
a. Seafloor spreading
Explanation:
As the plates move away from each other, new crust is formed at the bottom of the ocean, thus giving us seafloor spreading
A natural hazard<span> is an extreme event that occurs naturally and causes harm</span>
I wanna say its industrsy but im not too sure, im sorry!