The means by which war, as well for defense as for offense, are now carried on render these schools of the more scientific operations an indispensable part of every adequate system.
What justifies the assumption that the predatory egotism, sacred or profane, here implied, was an indispensable part of the pre-war political philosophy, explaining the great part of policy in the international field?
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "indispensable part" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.