Complex sentence: The Plan was first discussed in 1934, and solidified in 1938 at the Five Ministers' Conference, but the signing of the Tripartite Pact in 1941, along with a number of other events, prevented its full implementation.
Split into simpler sentences: The Plan was first discussed in 1934, and solidified in 1938 at the Five Ministers' Conference. But the signing of the Tripartite Pact in 1941, along with a number of other events, prevented its full implementation.