{"version":"1.0","provider_name":"South Carolina Encyclopedia","provider_url":"https:\/\/www.scencyclopedia.org\/sce","author_name":"Matthew Simmons","author_url":"https:\/\/www.scencyclopedia.org\/sce\/author\/sceditor\/","title":"Secession crisis of 1850-1851 - South Carolina Encyclopedia","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"F7p5LGCfPK\"><a href=\"https:\/\/www.scencyclopedia.org\/sce\/entries\/secession-crisis-of-1850%c2%961851\/\">Secession crisis of 1850-1851<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.scencyclopedia.org\/sce\/entries\/secession-crisis-of-1850%c2%961851\/embed\/#?secret=F7p5LGCfPK\" width=\"600\" height=\"338\" title=\"&#8220;Secession crisis of 1850-1851&#8221; &#8212; South Carolina Encyclopedia\" data-secret=\"F7p5LGCfPK\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":null,"thumbnail_width":null,"thumbnail_height":null,"description":"In the late 1840s the escalating sectional controversy over the expansion of slavery into the territory acquired from Mexico set in motion South Carolina\u2019s secession crisis of 1850\u20131851. In response to the Wilmot Proviso, a congressional proposal to ban slavery in the territory gained in the Mexican War, and the so-called Compromise of 1850, a [&hellip;]"}