They were founded for profit they grew cash crops with slaves.
They were about to be crushed by allied troops and the only way to end World War 1 was to sign the armistice
Synagogues became important to the Jews because they wanted a central place to worship
Explanation:
The Diaspora changed the way that Jews practiced their religion because after the destruction of the second temple and their exile from Jerusalem, the Jews did not have a central place to worship.