Easy way to understand the concept of dimensions and how the universe even started to exist

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What’s the difference between all the various American intelligence/defence agencies?

  • The CIA is responsible for gathering intelligence and carrying out covert operations outside the US.
  • The FBI is responsible for internal counterintelligence and federal criminal investigations.
  • The NSA is responsible for gathering intelligence specifically from communications networks.
  • Homeland Security is responsible for counter-disaster and disaster response operations, mainly terrorism and natural disasters.
  • DOD is the department of defense, the government body that oversees the armed forces and several intelligence agencies (including the NSA and DIA).
  • The DIA is the Defense Intelligence Agency, which is responsible for intelligence specifically regarding military affairs.
  • The DEA is the Drug Enforcement Administration. They are somewhat like a drug-specific FBI.

via Reddit