Why was the plat amendment added to the new Cuban constitution in 1901?

Tasked with balancing Cuban independence with American desires to control Cuban politicians deemed unfit for self-governance, they established The Platt Amendment to maintain public order and turn Cuba into a "self-governing colony".

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the  equal rights amendment  (era) states: "equality  of  rights  under the law shall not be denied or abridged by the united states or by any state on account of sex." congress first introduced the era in 1923, but the campaign for ratification took off in the 1960s during the  civil rightsmovement.