请给我一份钢笔的历史简介，要求英语回答，使用html格式，包含<h1>标题，<p>段落，<ul>无序列表，列表中包含至少4个<li>项。
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<title>A Brief History of the Pen</title>
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<h1>A Brief History of the Pen</h1>
<p>The pen, an instrument for writing or drawing with a liquid composition such as ink, has been an iconic symbol of human intellect and evolution of civilization for thousands of years. The first innovation of writing tools dates back to ancient times in Egypt and Mesopotamia, where early humans used rudimentary reeds and feathers to write on stones and papyrus. Since then, this humble tool has undergone a remarkable transformation, morphing from quill and reed pens to the dip pen and eventually modern fountain and ballpoint pens.</p>
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    <li>Reed and Bamboo Pens (3000BC-4th century AD)</li>
    <li>Feather Quills (4th century AD-19th century)</li>
    <li>Dip Pens (18th Century - Present)</li>
    <li>Fountain Pens (19th Century - Present)</li>
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assistant