Final answer:
In the 1960s, the Progressive movement fought to end city council seats tied to 'at large districts' and pushed for a new transportation system in Dallas. They implemented reforms such as the commission system and the city manager system to combat corruption and increase accountability in politics.
Step-by-step explanation:
In the 1960s, there was a push to end city council seats tied to 'at large districts' and to establish a new transportation system in Dallas. This movement was part of the broader Progressive movement, which aimed to make government more directly accountable to the voters and to combat corruption and inefficiency in politics. Progressives successfully implemented reforms like the commission system, where multiple commissioners were elected to handle specific operations of the city, and the city manager system, where a non-political expert was hired to manage the daily operations of the city.