SORRY BUT THERE IS No difference at all
Why isn't there an option [B]? :p
Ah, nevermind. I believe the answer is [C], anyway. Simply building new roads and adding to existing infrastructures cannot really be counted as a "technological improvement". Nothing is technologically improving.
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<u><em>Usually, random people will say that on your questions page to give you a virus but then that link doesn't look like the same link I see every day. I would still not click it just in case.</em></u>
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<em>Have a good one!</em>
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( ◑‿◑)ɔ┏--┑٩(^◡^ )</h2>