Here’s the completed cause and effect table based on the given information:
| Cause | Effect | |---------------------------------------------------------------------------------------------|---------------------------------------------------------------------------| | Companies began to prioritize advertising and use the services of professional advertising firms. | Consumers had more choices for goods to buy from more companies than ever before. | | The new urban working population had more time and money to spend on shopping. | Consumers had more choices for goods to buy from more companies than ever before. | | People became less interested in shopping because they struggled to meet their basic needs. | The population in the east coast cities was declining as people chose to move out west. |
Note: The last pair could have varied effects depending on the context but based on common trends, the population decline as people moved indicates economic or social difficulties affecting shopping interests.