Complex sentence: The popularity of such leftists governments was helped by their ability to use the commodity boom of the 2000s to initiate populist policies, though according to Daniel Lansberg this resulted in "high public expectations in regard to continuing economic growth, subsidies, and social services".
Split into simpler sentences: The popularity of such leftist governments relied upon by their ability to use the commodity boom of the 2000s to initiate populist policies. According to Daniel Lansberg this resulted in "high public expectations in regard to continuing economic growth, subsidies, and social services".