Why did marti call the United States"the monster"

He called the United States "the Monster", because he feared the power of the Nation.

National power is understood as the sum of all resources available to a nation in order to pursuit national objectives. Assessing the national power of political entities was already a matter of relevance during the classical antiquity, the middle ages and the renaissance and today.

National Power of a nation is relies on several factors which all together are called the components or elements or determinants of national power.

He called it "the Monster", because he feared the power of the Nation ...