What was one of the first steps the Nazis took to consolidate their power?

The consolidation of power by the Nazis involved several crucial steps to ensure their dominance over Germany. Outlawing all political parties other than the Nazi Party was a significant move that eliminated opposition and allowed the regime to establish a one-party state. This action was essential for suppressing dissent and controlling political discourse, ensuring that the Nazi Party was the sole authority in Germany. By removing all other parties, the Nazis could enforce their ideology without challenge, leading to an environment where any form of political opposition was severely punished.

The other options do not align with the initial steps taken for consolidating power. Establishing diplomatic relations with the USA was not a priority at the start of their rule, as the focus was primarily on internal control. Creating a coalition government was a step taken during their initial rise to power but did not contribute to long-term consolidation, as the Nazis later sought to eliminate any coalition partners. Implementing the Night of the Long Knives, while a significant event for solidifying leadership, occurred later in the regime's rule and aimed at purging dissent within the party itself rather than at the onset of their power.