Complex sentence: White Star had sought to fund the construction of the "Majestic" and her sister ship through the British government, a proposal which was accepted, with the stipulation that the Royal Navy would have access to the two liners in a time of war.
Split into simpler sentences: White Star had sought to fund the construction of both the "Majestic" and. Through the British government, a proposal which was accepted, with the stipulation that the Royal Navy would have access to the two liners in a time of war.