Why were the US Marshals Service the Secret Service the Federal Bureau of Investigation and the Drug Enforcement Agency created?

The U.S. Marshals Service was established in 1789 to provide federal law enforcement and manage the judicial system, including apprehending fugitives. The Secret Service was created in 1865 primarily to combat counterfeiting of U.S. currency. The Federal Bureau of Investigation (FBI) was formed in 1908 to handle federal crimes and ensure national security. The Drug Enforcement Administration (DEA) was established in 1973 to combat drug trafficking and enforce controlled substances laws.