The method of soil conservation in which stones, grass, soil are used to build barriers along contours and trenches are made in front of the barriers to collect water is called?

Each item consists of six sentences of a passage. The first and sixth sentences are given in the beginning as S1 and S6. The middle four sentences in each have been jumbled up and labelled as P, Q, R and S. You are required to find the proper sequence of the four sentences and markyour response accordingly on the Answer Sheet.

S1 :The climate question presents a leapfrog era for India’s development paradigm.
S6 :This presents a good template for India, building on its existing plans to introduce electric mobility through buses first, and cars by 2030.
P :It is aimed at achieving a shift to sustainable fuels, getting cities to commit to eco-friendly mobility and delivering more walkable communities, all of which will improve the quality of urban life.
Q : At the Bonn conference, a new Transport Decarbonisation Alliance has been declared.
R : This has to be resolutely pursued, breaking down the barriers to wider adoption of rooftop solar energy at every level and implementing net metering systems for all categories of consumers.
S :Already, the country has chalked out an ambitious policy on renewable energy, hoping to generate 175 gigawatts of power form green sources by 2022.

The correct sequence should be

The sultan who completed the conquest of the south and broke the political barriers between the north and the south was