In 1914, the United States had transitioned from the Gilded Age to the Progressive Age, enjoying 40 years of peace and a comfortable environment, and was the world's most powerful nation.

As world war looms, the curtain slowly rises on a golden age of emerging aviation industry, and a time traveler arrives.

What mark can it leave in this turbulent era?

Travel back in time to 19th-century Greece and witness his rise from a small Balkan nation. Lead Greece to its great ideals, restore the glory of Rome, and make the name of "Rome" known from Ireland to Khitan! And this is Constantine, the only sun of the Balkan Peninsula, the heir of Komnenos, the second Aristotle, the world's restorer, the Turkic butcher, and the loving father of the Roman people: Rome has only one chance to be revived. If you don't seize it, then let me do it!

In 1806, the Kingdom of Prussia teetered on the brink of collapse. Napoleon’s mighty army was pressing in, and the Battle of Jena loomed large on the horizon.

Lynn, a modern-day history enthusiast, finds himself reincarnated into the body of a fallen Junker noble’s son.

Facing the imminent fall of his homeland, he joins forces with legendary figures like Scharnhorst, Gneisenau, and Clausewitz, striving to change Prussia’s doomed fate.

This is a sweeping epic of war — a vivid portrait of iron-willed soldiers fighting fiercely for their nation’s survival.

Together, they will lead Prussia through the crucible of fire, paving the way for its rebirth and the future unification of Greater Germany!

While European merchant ships were still searching for new trade routes across the world's oceans in the 17th century, in the distant region of Australia, the sound of roaring industrial machines could be heard.

Truckloads of coal are being shipped to factories, and countless industrial products are flowing to overseas markets.

When we come to trade with you with our goods, please do not let the cloth drop from our hands and hold the muskets behind our backs.

When the line infantry marched toward the earth in neat steps, when the cold cannons fired scorching shells.

Jiang Zirui stood at the harbor, watching the ironclad ships and merchant ships raise their red dragon flags, and pointed his finger into the distance.

"Let's go! Free trade!"

Tsar Peter the Great of Russia, Augustus the Strong of Saxony, King Christian of Denmark, Frederick I, the "Soldier King" of Brandenburg... Across the European continent, countless enemies aimed to crush the hegemony of the Swedish Empire. In the face of powerful adversaries, the Swedish King Karl XII—who hails from a future era—tells his soldiers: "Victory or death."

[No System] + [Crossing] + [Farming] + [War] + [Revenge] + [Economy]

The flight was in distress, and Zhu Junluo became a descendant of Emperor Jianwen Zhu Yunwen who fled to America, starting a new chapter.

Repel European colonists and rescue Native Americans.

Cannons and huge ships returned to China to destroy the Qing Dynasty and restart the Ming Dynasty.

Develop industry and commerce, research and develop military technology, and dominate the world.

Medicine, machinery, chemistry, physics, technological development, giant steel ships, the restoration of the country and the conquest of Southeast Asia, the subjugation of the four seas.

A soul of the future, combined with the mind of a teenager in the late Ming Dynasty, drifted to Australia with a group of defeated pirates. He used this as a base to build a brand new world, allowing the Han style to blow to the world again.

Tomorrow, you will receive your pay at the parade grounds, but do not wear armor. This

time-honored saying forces Yun Tianyang,

who has time-traveled to the late Ming Dynasty, to flee with a handful of defeated soldiers. On the vast ocean, where will he go?

This world is in the latter half of the Age of Exploration, with vast swathes of the New World being explored, plundered, and colonized by Europeans, ultimately achieving European dominance.

Can Yun Tianyang catch this last train? And lead this ancient nation to once again the pinnacle of the world?

Napoleon once said, "If I had Cossack cavalry in my army, I would use them to sweep the world." This is because even Napoleon was defeated by the Cossacks. —From this, we can deduce that Cossack cavalry > French dragoons > Polish winged hussars > Hungarian hussars > Prussian cuirassiers. The strongest cavalry in the world—the Zaporizhia Cossacks—were mostly serfs who escaped from landowners' enslavement, and were the precursors to Ukraine. Book summary: The first half mainly covers: uniting heroes against the Ottomans, establishing a federation, fighting the Ottomans, and rebuilding Rome. The second half mainly covers: eating the Burgundian skull-cracked, and fighting the Reformation Wars. The famous letter says: "You, the devil of Turkey, brother and friend of the devil, henchman of Lucifer. What kind of demonic knight are you, unable to kill a hedgehog even with your bare buttocks?"...