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diff --git a/browser/components/newtab/lib/DefaultSites.jsm b/browser/components/newtab/lib/DefaultSites.jsm
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+++ b/browser/components/newtab/lib/DefaultSites.jsm
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const DEFAULT_SITES_MAP = new Map([
+  // This first item is the global list fallback for any unexpected geos
+  [
+    "",
+    "https://www.youtube.com/,https://www.facebook.com/,https://www.wikipedia.org/,https://www.reddit.com/,https://www.amazon.com/,https://twitter.com/",
+  ],
+  [
+    "US",
+    "https://www.youtube.com/,https://www.facebook.com/,https://www.amazon.com/,https://www.reddit.com/,https://www.wikipedia.org/,https://twitter.com/",
+  ],
+  [
+    "CA",
+    "https://www.youtube.com/,https://www.facebook.com/,https://www.reddit.com/,https://www.wikipedia.org/,https://www.amazon.ca/,https://twitter.com/",
+  ],
+  [
+    "DE",
+    "https://www.youtube.com/,https://www.facebook.com/,https://www.amazon.de/,https://www.ebay.de/,https://www.wikipedia.org/,https://www.reddit.com/",
+  ],
+  [
+    "PL",
+    "https://www.youtube.com/,https://www.facebook.com/,https://allegro.pl/,https://www.wikipedia.org/,https://www.olx.pl/,https://www.wykop.pl/",
+  ],
+  [
+    "RU",
+    "https://vk.com/,https://www.youtube.com/,https://ok.ru/,https://www.avito.ru/,https://www.aliexpress.com/,https://www.wikipedia.org/",
+  ],
+  [
+    "GB",
+    "https://www.youtube.com/,https://www.facebook.com/,https://www.reddit.com/,https://www.amazon.co.uk/,https://www.bbc.co.uk/,https://www.ebay.co.uk/",
+  ],
+  [
+    "FR",
+    "https://www.youtube.com/,https://www.facebook.com/,https://www.wikipedia.org/,https://www.amazon.fr/,https://www.leboncoin.fr/,https://twitter.com/",
+  ],
+  [
+    "CN",
+    "https://www.baidu.com/,https://www.zhihu.com/,https://www.ifeng.com/,https://weibo.com/,https://www.ctrip.com/,https://www.iqiyi.com/",
+  ],
+]);
+
+const EXPORTED_SYMBOLS = ["DEFAULT_SITES"];
+
+// Immutable for export.
+const DEFAULT_SITES = Object.freeze(DEFAULT_SITES_MAP);