Answer:
<em>C. It led to concerns regarding the dangers of greenhouse gases.</em>
1. Land Grant System- offered each railroad company land
2. Companies sold off their excess land to settlers, real estate agents, and businesses- able to cover all building costs because of this.
"They imported technological advances from Great Britain" is the one among the following choices given in the question that shows what <span>Francis Cabot Lowell and Samuel Slater have in common. The correct option among all the options that are given in the question is the third option or the penultimate option.</span>
<span>To keep the number of slave and free states, Missouri joined union as slave state and Maine joined as free state. </span><span>
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