Even O'Sullivan himself talked about Manifest Destiny in broad terms before he coined that particular phrase: "The expansive future is our arena," he wrote in 1839.
He wanted freedom for India from the British. He did several things to reject British goods like Salt, and Cotton. He had people march for salt of the coast of Arabian Sea. He also made people burn British clothes and he decided to make his own clothes by using a giant wheel to spin cotton and made his famous clothes like the dothi. which he wore later in life.
In California? Because as of Sep 8, 2020, 2 million acres have been burned.
The third estate should have more political influence.