丹麦的历史，作为世界历史九年级上册知识点的一部分，就像是一本宝贵的资料，它记录了丹麦从远古到现代的发展历程。我们可以通过这本书了解丹麦人如何从狩猎采集转向农业和青铜时代，从海盗时代走向联盟与独立，再到近代的君主立宪制和工业化。
在公元前1万年的时期，日德兰半岛上的居民以狩猎为生。当他们进入新石器时代，他们开始耕作土地，开垦农田，并且使用青铜进行工具制作。随着时间的推移，丹麦人展现出了其航海技术，他们经常前往罗马帝国以交换琥珀、燧石等物品。这一过程中，有时候他们也会变成商队中的“海盗”，在夏季组织抢劫行动。793年，一群丹麦海盗攻击了英格兰的一个修道院，这标志着他们对英格兰的大规模侵扰。此后，871年丹麦海盗占领了伦敦，而878年，阿尔弗烈德大帝与这些海盗达成了协议，将英格兰分为两部分，并允许丹麦移民在东北部建立“丹麦区”。1016年，当克努特大帝攻占了整个英格兰时，他创造了一片包括挪威、英国、苏格兰大部分以及瑞典南部地域的大帝国，这个帝国持续至1042年的瓦解。
16世纪中期之后，瓦尔德马一世建立了一个强大的封建王朝，他通过战争控制爱沙尼亚和易北河以北地区，以及果特兰岛。在1397年，由玛格丽特一世女王主持的卡尔马会议上，将她的国家——丹麦、瑞典和挪威联合起来形成联盟，其中她处于统治地位。这个联盟存在了126年期间内，其中包括将曾属于挪威的地方，如冰岛和法罗群岛归入自己的管辖之下。在此期间，为了打破汉萨同盟对波罗的经济领域的地位影响力而进行长期战事，最终成功并吞石勒苏益及荷尔斯泰因，但这也导致税收增加，对农民造成压力。
14世纪中叶黑死病爆发，使得人口减少约五分之一。而为了平息不满情绪，加拿大人国王克里斯蒂安二世召开四级会议寻求支持。但是连续不断的问题尤其是在瑞典方面激化，不幸的是1523年的达拉纳起义导致他军败逃后瑞典宣布独立。此后的几百年间，在争夺波罗耳湾控制权以及周围地区与瑞典之间不断斗争如1563-1570年的七十七场战争或1611-1613年的卡尔马战争但都未能取得胜利最终导致疆土缩小到了现在这样的小规模。
三十岁战争期间，因为情况更糟糕，全境被瑞典所占据。而之后，在1675-1679年的斯堪尼亚战争或者1709-1720年代北方战争中也是败给瑞典。不过由于国力的衰退，它避免卷入当时欧洲混乱的情况。在七十年代战役或者法国革命初期的时候，它保持中立或避免介入。
同时Danish maritime industry and overseas trade are very developed, with the Danish fleet being second only to Britain in Europe. In the 16th century, Denmark established its East India Company and had colonies in West Indies and Guinea.
During the Napoleonic Wars, Denmark declared neutrality but was attacked by British forces in 1801 (Copenhagen Campaign) and again in 1807 when a British fleet led by Horatio Nelson bombarded Copenhagen. The Danish Navy was completely destroyed. After Napoleon's defeat, Sweden took Norway from Denmark.
The economic consequences of years of war left Denmark with significant debt. To address this issue, the government limited the power of nobles and restricted their privileges. This change also ended serfdom as it was replaced by a system where peasants paid rent to landowners instead of working on their lands for free.
In 1848, during a wave of nationalist movements across Europe including France and Germany, Denmark held constitutional meetings that resulted in a new constitution which abolished absolute monarchy and established constitutional monarchy along with property qualifications for voting rights. The same year saw the establishment of Left-wing parties representing wealthy farmers' interests while socialist parties were formed later such as Social Democratic Party founded in 1871 which organized labor unions throughout the country.
By late nineteenth century industrialization progressed rapidly within Denmark particularly shipbuilding telecommunications manufacturing industries began to have some scale.The agricultural village community system gave way to cooperative societies leading agriculture towards professionalization making it one among world's major agricultural countries
During World War II German troops invaded on April 9th1940 Danmarks government surrendered immediately afterward Greenland Iceland Faroe Islands came under American control separating them from danmarkindependence granted iceland independence returned greenland faroe islands back to denmark.
Throughout WWII resistance movement grew larger fought against Nazi occupation through sabotage strikes underground guerrilla warfare.
On May4th1945 German troops surrendered ending Nazi occupation marking an end to danmarks involvement
Following WWII danmarks economy received aid under Marshall Plan joined European Cooperation Organization North Atlantic Treaty Organization European Commission establishing diplomatic relations with China made changes constituting Constitutional Monarchy One House Parliament
Lastly we have "the little mermaid" bronze statue located at entrance point Langelinie harbor Copenhagen created by sculptor Edvard Eriksen based on Hans Christian Andersen's fairy tale about Little Mermaid who falls deeply in love with prince saves his life yet is rejected marries another woman remains waiting on rocks hoping for princes return despite knowing he never will be hers
