I want to know the answer to the following question:
What develpment produced the first large fleet ships?
All the background I'm provided with is that "As a result of the Washington Naval Treaty of 1922, which limited the construction of new heavy surface combat ships, most early aircraft carriers were conversions of ships that were laid down (or had served) as different ship types: cargo ships, cruisers, battlecruisers, or battleships.". Is that enough to answer the question?
Answer: no