Paraphrase:

Question

the juristic act which creates the trust—the act of executing the trust deed or otherwise transferring the trust property to the trustees—may be governed by a law different from that which governs the interpretation, administration and other aspects of the trust.

Answer 1

The legal action that establishes the trust, such as signing the trust deed or transferring property to the trustees, may be subject to a different law than the one governing the interpretation and administration of the trust.