If you're referring to Napoleon's Spanish Iberian peninsula campaign between France and the coalition of Spain, Portugal and England from 1808-1814 there were three critical reasons for its failure and one main critical importance for its failure.
The three critical reasons for its failure:
1) Napoleon greatly underestimated the fierceness and will of the Spanish fighting spirit.
2) Chiefly because of reason 1) above, the vastness of the Spanish frontier and the resources required to occupy & hold territory bled his army dry.
3) Napoleon did not expect the coalition arrayed against him to hold as strongly as it did.
The main importance of its failure was that, due to Napoleon's overly ambitious tenancy to overstretch and string-out his resources, his other armies in other theaters of war were left under strengthened.
Culture comes from the way people decide to do things. A given race decides to worship a certain way, dress a certain way, and all the other things that are distinctive about one race from another. All these things added together compose the culture of a race.
In Aztec social hierarchy, people who are called "Serfs" are the ones expected to support the upper class. They belong to the lowest social class in the Aztec culture and required to do labors for the nobles. As for the Incas, "Commoners" (farmers, artisans, servants, etc.) are required to support the higher class for they do not practice slavery. Majority of Inca's population belongs to the commoner class.
Answer:
established that federal laws superceded state laws.
Explanation:
McCullough Vs Maryland case of 1819 was the first case to showcase the power relation between the state and the federal government. The case between the power of the federal government to create a second National Bank and the power to tax it by a state because it was lying within its boundaries. The Supreme Court's decision which justifies the Second National Bank and declaring the state's ability to interfere with the federal government is limited. The decision turned out that the state of Maryland could not impose a tax on the federal government.