How did the Inca keep their empire unified? A With multiple capital cities
B Through conquest and threats
C With a strong economy and trade
D Through language and a road network
help please

japan is located on a chain of islands called an archipelago. it is made up of four main islands and thousands of smaller ones. the terrain is mountainous, which means there is not a lot of good land for farming. because of the geography, the japanese relied on the sea for many aspects of daily life.

the graph is a circle graph because it demonstrates different components of the graph in the form of a circle . pls mark brainliest!