What was the first major acquisition made by Facebook?

The first major acquisition made by Facebook was the acquisition of Instagram in April 2012 for approximately $1 billion.

The first major acquisition made by Facebook was the purchase of the photo-sharing platform Instagram in April 2012 for approximately $1 billion in cash and stock. This acquisition was significant as it allowed Facebook to expand its presence in the mobile space and further solidify its position as a dominant player in the social media industry.