The major US acquisitions of land from Mexico during the mid-1800s were the annexation of Texas, the Louisiana Purchase, and the Adams-Onís Treaty.
the Louisiana Purchase, the Adams-Onís Treaty, and the Gadsden Purchase.
the Louisiana Purchase, the Mexican Cession, and the Gadsden Purchase.
the annexation of Texas, the Mexican Cession, and the Gadsden Purchase.

the annexation of Texas, the Mexican Cession, and the Gadsden Purchase. or d

Explanation:

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yes they have. but is this a true false question? if it is, the answer is true.

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)