How did leading american thinkers justify america's westward expansion in the 19th century?

Monroe Doctrine: It is the conception of foreign policy of the United States according to which any attempt of colonization or intervention of a European power in the territory of the American continent will be answered by the United States, which will not tolerate any kind of interference in the area. To this doctrine he is also known with the expression of America for the Americans.

On the other hand we also have the Doctrine of manifest destiny

The manifest destiny consists of a series of ideas that justified the expansion towards the West. These were:

The government of the United States, the Constitution and the institutions of the country and, as a result, the Americans themselves, have virtues that make them unique and special.

As a consequence of the foregoing, Americans have a moral obligation to propagate their form of government and their vision of the world. And that in this mission they will be accompanied by God.

answer: cannibalism, the capac raymi, capacocha, the eight day feast, the combing of the hair

explanation:

the incas have many rituals, cannibalism was always a very ritual thing, which was normally tied to sacrifices, warfare, death, and regeneration.

  the capac raymi was one of the most important ceremonies. it occurred around the summer solstice and was when they worshiped their sun god, also known as inti.

  the capacocho was another one of their most important ceremonies. it was when many children where selected to start their training, and these children where destined to become sacrificial blessings to their sun god, inti. being chosen for this ritual was a blessing.

  the eight day feast was a feast that lasted 8 days and, each day, the day began with a chanting at dawn. a follow up song at noon. which ended with complete silence at the end of the day. on this day, inca royalty was always dressed in silver and gold laced clothing.

  the combing of the hair was the most important ritual to young girls. this ritual was known as the coming of age ceremony, but only the most beautiful girls where chosen. in this ceremony, the girls chose their new name and where chosen as either brides, or princesses of rulers.

answer; eliminate parking problems in cities, because a car took up only half as much space as a horse and buggy;