Keep Exploring-Your chances of survival in this game is directly proportional to the amount of time spent in exploring new territories.Also just like in real life, use faith wherever possible to build units. Removing your old units can save you a lot of maintenance. Building commercial districts and proper economic policies are the right way to go.
Doing trade and utilizing bonus resources go a long way in improving your financial conditions. Choosing the leader who combines well your playing strategy is vital for success. From Teddy Roosevelt to Queen Victoria, you have a plethora of options to choose from. Each of the leaders has different traits and characteristics.