Complex sentence: The Constitution of 1848 which he drafted, however, established the most restricted suffrage that ever existed in independent Costa Rica, and as president his lack of a committed political base made him an easy target for overthrow by the military.
Split into simpler sentences: The Constitution of 1848 which he drafted, however, established the most restricted suffrage that ever existed in independent Costa Rica. As president his lack of a committed political base made him an easy target for overthrow by the military.