There exists the same question that has the following choices.
A. Comintern.
<span>B. Free Workers. </span>
<span>C. Solidarity. </span>
<span>D. Knights of Labor.
</span>
The correct answer is letter C. Solidarity that was legalized in October 24, 1980
<span>The formation of a mountain belt is a thickening of the earths crust, and are usually formed due to the activity of tectonic plates, so moving together and pushing against each other which is raises the land to create a mountain belt. it can happen wherever the tectonic plates meet, so it could be in the center of a continent.
hope that helps !!!</span>