As history can be changed by rogue actions in Star Trek: First Contact, it can also be restored/preserved by such actions; which is why when it looked like the Enterprise-E was going to be sacrificed to destroy the Borg, Captain Picard sent his crew members “orders to find a quiet corner of North America, and stay out of history’s way,” through his new friend, and assistant to Zephram Cochrane, Lily Sloane (Alfre Woodard.)
Once Captain Picard and his Enterprise crew cross over into 2063, the course of human history is a streamlined experience.
Destroying the Borg Sphere that launches an attack on the Montana settlement that Zephram Cochrane and his fellow survivors are living on, the rest of the historically relevant story sees Enterprise crew helping to repair the Phoenix for its significant journey.