What law gave Hitler dictatorial power?

The correct choice is the Enabling Act, which was pivotal in transitioning Germany from a democratic republic to a totalitarian state under Adolf Hitler. Passed in March 1933, this law allowed Hitler's government to enact laws without the involvement of the Reichstag, effectively giving him the power to legislate by decree. This meant that the existing constitutional framework was bypassed, enabling Hitler to consolidate his authority and eliminate political opposition. The Enabling Act marked a significant step in establishing a dictatorship, as it essentially granted Hitler the legal basis to rule unrestricted by parliamentary procedure, solidifying his grip on power.

In contrast, the Reichstag Fire Decree, while it did suspend various civil liberties and allowed for the arrest of political opponents, did not grant him outright dictatorial powers in the way the Enabling Act did. The Locarno Pact was focused on diplomatic agreements regarding borders in Europe and did not relate to internal governance. The Nuremberg Laws were racial anti-Semitic laws that institutionalized discrimination against Jews but did not grant dictatorial authority. The Enabling Act stands out as the mechanism through which Hitler's totalitarian control was legally achieved.