Meta’s Threads turns one with 175 million users. What’s driving the growth?

Meta’s Threads, launched July 5, 2023, by Mark Zuckerberg, hits 175 million monthly users, challenging Elon Musk’s X. Despite X's growth, Threads steadily climbs. It tested the ActivityPub protocol, launched an API, started a fact-checking program, posts appear on Mastodon. Instagram promotion boosts users amid political content policy criticism.