Because Cuba is rather close to US and thousands of kilometers away from Spain.
hope this helps you.
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Water quantity is the timing and total yield of water from a watershed, and is measured by total yield and peak flow over a specified period of time. Water quality is the suitability of water for drinking, recreational uses, and as habitat for aquatic organisms and other wildlife (Neary 2002).
The main characteristic of the Confederate States of America that made it a confederal government <span>when compared to the government of the United States was that its central power was much weaker. </span>
The answer to this question is internet.
These days, the majority of scientific researchs and journals are fully available on the internet.
Not only that, the range of the researches have become really specific so we could easiy target the source of information that cater to our interest.