Complex sentence: The Jewish Agency played a central role in the founding and the building of the State of Israel, including the establishment of about 1,000 towns and villages, and continues to serve as the main link between Israel and Jewish communities around the world.
Split into simpler sentences: The Jewish Agency played a central role in the founding and the building of the State of Israel. In the years before and after the creation of the State, The Jewish Agency oversaw the establishment of about 1,000 towns and villages, and continues to serve as the main link between Israel and Jewish communities around the world.