Thanks for asking!
So the Book of Daniel basically sets up the timeline for the Tribulation so we know what to expect as 70 weeks, (which is actually 7 years). The Tribulation preceeds Armageddon. So there's going to be such unrest in the world and fear, that basically everyone agrees to a one world government with 10 divisions, led by one figure known as the Antichrist. He will appear to be all things to all people, literally making everybody happy with a Treaty that restores peace and security, supposedly. Included in this, is an agreement with Israel that Jews can worship their G_d and resumption of sacrifices without interference at the yet-to-be-built Third Temple. (That would be a big clue, because the Third temple needs to be built on the temple mount, where Second temple ( of Solomon) existed before the Dome of the Rock; and there are currently pure heifers that will be very ready to be sacrificed for their ashes to sanctify this new temple). Exactly 3.5 years into the New Treaty, the AC well enter that Third temple, go into the Holy of Hollies where only the top rabbis are allowed to go, and demand he be worshiped as God himself. Bait and switch if you will. Simultaneously, the dictate goes down that as part of this allegiance to him, throughout the entire world, any one wanting to buy or sell anything including food, water, etc , regardless or wealth or social status, must recieve "The Mark" in their Right hand or Forehead, or face beheading - no exceptions.The Mark is not ust a business transaction, its an allegiance/loyalty statement.
Most of the people that are working for this government now are currently team AC. The good news its still time to switch teams, accept Jesus as your Savior, and join Team Jesus! (Team JC!!)