Explain two methods of water control and/or land clearing methods used during this period.

The two methods for water control and land cleaning:

Slash-burn agriculture: The excessive number of shrubs and useless weeds is removed from the target land or region, where there is any requirement of start off any level of construction or initiation of the industrial region.

Irrigation:The water supply are provided by certain pathways and more over canals through which it can reach from its main reservoir towards the crop or to the area of need.

Explanation:

Water control:

In order to use the amount of water supply in a proper way, we need different pathways and system of canals. As water is one of the most vital or essential factor for life on this planet. As the plants requires more water for proper food production. i.e agriculture.

Land clearing methods:

The different types of shrub and weed is cut down, along with the limited number of trees for clearing the land for many industrial and agricultural purposes.

what are the others?

food chain i would say only because there is competition on getting food and survival