The phrase "historic milestone" refers to a significant event or achievement that has great importance or impact in history. It represents a momentous point or accomplishment that is noteworthy and will be remembered for a long time. Full definition
The altcoin markets have more or less caught bitcoin's tailwind, enabling many other cryptocurrencies to reach historic milestones of their own. (dailybitcoinnews.com)
Bitcoin's protocol development continues to march ahead at a rapid clip, and the Lightning Network — a scaling solution that proponents believe will relieve many of the network's growing pains — continues to achieve historic milestones even while it is officially in testing. (cryptotimes.news)
But he completed it, preserving a great deal of what we know about Indian cultures, including more than 75 languages, thousands of songs and stories, traditional practices in everything from clothing to religious ritual, and the Indian accounts of such historic milestones as the Battle of the Little Bighorn. (booklistonline.com)