If you find yourself getting attacked, work as fast as you can to get defenses up early. Build towers and get upgrades. Also, when you have a wonder, the computer player gets quite aggressive and attacks more frequently.
Hope this helps.
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Darkrain@agershq.com
LT Darkrain
http://agershq.com
Helping to create an Ager Community
Sarmis_Darkrain
Tribune of Sarmis City - http://welcome.to/Sarmis