Island tycoon 5 is a simulated business strategy game. In the game, the player is the decision-maker of the island. You need to use your wise leadership to keep your island developing and spend different times. So in "Island Tycoon 5", how can we enter another era from one era? How to upgrade the times?

The method of upgrading Island Tycoon 5 to the next era;

When the colonial era is upgraded to the World War II era, you need to have a 5 1% support rate among your island residents;

From World War II to the Cold War era, players must first complete all the scientific and technological research of World War II, and then sum up with the Axis countries. There is also the task of establishing diplomatic relations with the allies, which requires players to pay. In addition, the Axis countries will ask refugees to enter your island. If you refuse, you will face war. After all the tasks are completed, upgrade to the cold war era;

In the cold war era, if all scientific research is completed, it will enter a world war. If you are allied with other countries, you need to support a wave of three infantry and one tank. If it is not the allied forces, it needs to support two waves, three infantry and one tank. If you choose to surrender directly during this period, you will be punished in the cold war era.