General science biology

 General science biology 

General science biology published this article page no 35 they managed to keep control by developing sophisticated ways of organizing their society. they realised that by maintaining a large army and by inventing very advanced agricultural building and engineering methods that they could become a formidable presence. the most important inventions that the incas came up with was the elaborate systems of stone roads and many bridges that they built to connect all the parts of the country. everyone that the incas conquered were forced to learn and speak their language so inevitably having a common language made communication so much easier in the inca empire. firstly the inca road system deserves a mention as it is the most extensive system in pre-columbia general science biology syllabus.

 General science biology