The question of who made the best swords in history is subjective and depends on various factors, including the specific criteria, cultural context, and personal preferences. Many cultures throughout history have produced exceptional swords with their unique characteristics and advantages. Here are a few renowned examples:

1. Japanese Swords (Katana): Japanese swords, particularly the katana, hold a prominent place in sword-making history. They are celebrated for their craftsmanship, sharpness, and balance. Skilled Japanese swordsmiths, such as Masamune and Muramasa, are renowned for their contributions to the art of sword-making.
2. European Swords: European sword-making also has a rich history, and different regions and periods have produced remarkable swords. Swords such as the Viking Ulfberht, the medieval arming sword, and the Renaissance-era rapier are highly regarded for their design, craftsmanship, and effectiveness in their respective periods.
3. Indian Swords (Tulwar): Indian swords, particularly the tulwar, have a distinct design and are known for their curved blades and intricate hilt designs. They were effective weapons in close combat and were crafted by skilled artisans.
4. Chinese Swords (Jian, Dao): Chinese sword-making has a long history, and swords like the jian (a double-edged straight sword) and the dao (a single-edged saber) are revered for their elegant design, balance, and historical significance.
5. Middle Eastern Swords (Scimitar): Middle Eastern swords, such as the scimitar, have a distinct curved blade shape and are associated with cultures like the Persian and Ottoman Empires. They are known for their cutting power and were effective in cavalry warfare.

It is important to note that different cultures developed swords based on their unique needs, combat styles, and available resources. Each culture's swords had their own merits, historical contexts, and intended uses. The concept of the "best" sword is subjective and depends on individual preferences, the specific criteria being considered, and the cultural and historical context.