What problems did the incas overcome to rule their huge empire?

The land the Incans had settled on was hilly.  Due to hilly geographical nature of the mountain, farming and efficient movement was a real hassle. Incans were smart enough to device a road system that enabled them to overcome common geographic problems like distance. To make their mountainous lands for suitable for farming, they also built terraces with step-like platform where they could safely plant their crops.

the buddha identified ways to end suffering and attain minerva, which is the ultimate goal of buddhism. for this purpose, he came up with the concept of the four noble truths, which were crucial to ending suffering. the last of these truths stressed following the eightfold path , which is a series of steps that allow you to live life in a proper manner. these steps would make sure that you would follow the or live life in moderation.

the eightfold path has 8 practices which are:

the answer is a. the harappan civilisation is also called the indus valley civilisation, this is because they built their cities along the indus river. the reason behind this location can be found in the rest of the "old world" civilisations like mesopotamia or egypt, the first built their cities along the rivers tigris and euphrates, the second along the nil; : their respective civilisations thrived because the overflowing of their respective rivers produced favorable conditions for agriculture, their main support.