Final answer:
The statement is False. Mexico does not have over 70 percent of the land area of Middle America and does not have more people than all the realm's other countries and islands combined.
Step-by-step explanation:
The statement is False. Mexico does not have over 70 percent of the land area of Middle America. The correct answer is False because Mexico only covers about 33 percent of the land area of Middle America (including the islands). The statement is also incorrect in terms of population as Mexico does not have more people than all the realm's other countries and islands combined.
Learn more about Mexico's land area and population in Middle America