The answer is b)<span> groundwater was overpumped
As population in Mexico City and the </span><span>San Joaquin Valley skyrocketed, the demand for water also increased.
Mexico City was once the most populated city on earth and that created a lot of burden on the cities infrastructure including the water supply.
The groundwater was over pumped leading to huge problems for millions of people.</span>
Your answer would be 1 to me because it is the only one that makes sense
The "Reign of Terror" is associated with France, since this describes the period of time shortly after the French Revolution, during which thousands of people were murdered.