<span>Comparative investigations provide large amounts of information and use a wide range of variables. However, they may reveal relationships that do not always indicate cause and effect.</span>
Answer:carpetbaggers the people who helped them were called scalawags
Firms spend money and time to advertise to showcase their product among the competition.
<h3><u>Explanation: </u></h3>
Advertisement is a form of communication between a seller of goods/services and the consumer. It allows individuals to bring their goods/services in public eye, awarding them of the existence of the said goods/services.
Firms spend a lot of time and money on advertising because it is one of the most effective ways to increase sales and potential customers. It allows firms to expand their market area. As the area expands, so does the base of their audience and hence, more people learn about its existence. An effective advertisement requires time and money so that it looks more attractive and compelling among the competition.
Answer:
Night of the Long Knives, in German history, purge of Nazi leaders by Adolf Hitler on June 30, 1934. Fearing that the paramilitary SA had become too powerful, Hitler ordered his elite SS guards to murder the organization's leaders, including Ernst Röhm.