"<span>(2) United States entry into World War I" was a result of the other three, since all of the other three were issues that caused great alarm for the world, especially the US. </span>
        
             
        
        
        
It was the Mayans who built an ancient civilization, in what is now Mexico and Central America. They had an incredibly advanced civilization but were overcome by European settlers.
        
             
        
        
        
He supported it by simply signing the paper of the Indian Removal Act, this was proposed in late February 1830.
        
             
        
        
        
A. because the ball won't stop! hopefully this helps!!