Complex sentence: During World War II, aiming to increase crop yields for a nation at war, a team under the leadership of Judah Hirsch Quastel, developed powerful new herbicides, including 2,4-D, still the most widely used weed-killer in the world.
Split into simpler sentences: During World War II, aiming to increase crop yields for a nation at war, a team under the leadership of Judah Hirsch Quastel, developed powerful new herbicides. Among these was 2,4-D, still the most widely used weed-killer in the world.