此句中有什么语法错误?应该怎么修改.

应该是复数 plans,into effect major plans
如果是单数的话 major 前面应该有 a 或 the,into effect a major plan 或 into effect the major plan请问 put 的用法正确吗？
我感觉应该用 that was put into....用 put 是对的，句子中的主语 - 谓语 - 宾语是: The first city - was - Washington
“that (put) into effect major (plan) for the (clustering) of government (buildings)” 是修饰 this city 的从句