Many Southerners felt betrayed by President Zachary Taylor because he was a Southerner who favored California's admission as a free state
Answer:
April 30 – The Treaty of Westminster (1527), an alliance during the War of the League of Cognac, is signed. May 6 – Sack of Rome: Spanish and German troops led by the Duke of Bourbon sack Rome, forcing Pope Clement VII to make peace with Charles V, Holy Roman Emperor, marking the end of the High Renaissance.
Explanation:
A.
Undermine
erode the base or foundation of (a rock formation).
The National Reclamation Act funded irrigation projects in West America. So, as you can imagine - the most likely answer here is B! =)