The Inca culture was one of the most developed in pre-Columbian America. Among their achievements, was their architectural ability. Inca structures were made of stone that fit together, with extraordinary stability. The buildings have survived for centuries, with no use of mortar, in areas that are prone to earthquakes and volcanic activity.
The Inca also developed calendars based on astronomical observations. Astronomers understood equinoxes, solstices and zenith passages. Numerical information, particularly for administration, was stored in <em>quipu</em> strings.
In terms of art, Inca ceramics were highly advanced, although most of their silver and gold work was melted down by the Spaniards.
They were also advanced in medicine, performing skull surgeries successfully and with high survival rates.
Answer:
The Nixon Doctrine was one of many attempts by the president to encourage “<em>Vietnamization</em>” or withdrawing US soldiers and turning over defense duties to the South Vietnamese troops.
Explanation:
The expression <em>Vietnamization</em> in the context of the US withdrawing its forces from the Vietnam War means that Americans were leaving the territory so the conflict between North and South Vietnam would be handled by themselves.
President Richard Nixon issued a statement in 1969 where he announced that the US had been talking with South Vietnam leaders and American troops were going to be substituted by southvietnamese troops in the areas of the conflict. By this time American pacifists and veterans groups were massively protesting against the continuous presence of the US in the war.
