Complex sentence: Such was the state of things when the ascendancy of Mahadji Scindia received a signal from the combined forces of Marwar and Jaipur and the of Lalsot in which the Marattha chief was completely defeated was the signal for the Rajputs to resume their alienated territory.
Split into simpler sentences: Such was the state of things when the ascendancy of Mahadji Scindia received a signal from the combined forces of Marwar and Jaipur and the of Lalsot in which the Maratha chief was defeated. It was the signal for the Rajputs to resume their alienated territory.