Incan architecture is the most significant pre-Columbian architecture in South America. The Incas inherited an architectural legacy from Tiwanaku, founded in the 2nd century B.C.E. in present-day Bolivia. A core characteristic of the architectural style was to use the topography and existing materials of the land as part of the design.[1] The capital of the Inca empire, Cuzco, still contains many fine examples of Inca architecture, although many walls of Inca masonry have been incorporated into Spanish Colonial structures. The famous royal estate of Machu Picchu (Machu Pikchu) is a surviving example of Inca architecture. Other significant sites include Sacsayhuamán and Ollantaytambo. The Incas also developed an extensive road system spanning most of the western length of the continent and placed their distinctive architecture along the way, thereby visually asserting their imperial rule along the frontier.
It happened after the 9/11 attack in 2001.
That is fall under the executive branch
Carbon, or carbon dioxide, concentrations in the atmosphere have increased. The burning of fossil fuels is the cause of the increase in carbon or carbon dioxide concentrations in the atmosphere.
More CO2 is dissolving into the ocean as a result of increased levels of carbon dioxide in the atmosphere caused by humans. The average pH of the ocean is now around 8.1, which is basic (or alkaline), but as the ocean absorbs more CO2, the pH drops and the ocean becomes more acidic.
Carbon dioxide gas in the atmosphere dissolves into the ocean, causing ocean acidification. This lowers the pH of the water, making the ocean more acidic.
To know more about carbon dioxide here
brainly.com/question/14581272
#SPJ4
Answer:
People who have answered so far have no idea what they are talking about. Islam had started spreading into Africa even during the time of prophet Muhammad,and except for North Africa, Muslim armies never ventured south into the Sub-Saharan region. Islam grew as a result of trade and migration of African Muslims into the south.
Explanation:
