Nearly 30 years ago, the Rebbe declared 1991 as the year to which the ancient Midrash (Yalkut Shimoni, Isaiah:499) was referring to, that is, "The year Moshiach is first revealed".
What significant events have occurred since then? We'll just mention 3 strides in the homestretch to the finish line.
1) In order that the whole world be able to connect to news of universal importance, the internet became connected to everyone's phone. In the last 20 years, the smartphone had been invented for this reason. Today this handheld device is everybody's newspaper.
2) The political upheaval that occurred overnight in 2016, with Trump's triumph, which brought a miraculous turnaround, from an administration bound to become a miserable hotbed of Jewish hatred under Muslim influence, to become, overnight, an administration that is the most benevolent ever to Jewish and Israeli aspirations.
3) The Chinese Corona virus caused a universal shakeup to demonstrate that even an invisible force can transmit to the whole world an earthshaking phenomenon. Even a person who cannot leave his home can get the message, an epoch-making news item to be sure, right in the palm of his hand.
Of course there were many other events as well, such as the Persian Gulf War, when Israel was struck with 39 Scud missiles (each the size of a bus), yet none were killed; Israel becoming a stellar technological giant and center of world trade, even selling military equipment to Arab countries; etc. But here we just mentioned 3 of global scope.