LYNN – A bill signed into law by Gov. Deval Patrick paves the way for greater communication between the state government and the communities of Essex County that are home to National Heritage Sites.Essex is one of five National Heritage Areas in Massachusetts.Annie Harris, executive director of Essex Heritage, said the legislation encourages closer cooperation between the organization and state agencies for projects such as trail development, scenic byways, land conservation and cultural tourism.Heritage areas encourage tourism and have distinct economic value, Harris said.Sen. Frederick Berry, who worked to gain support for the measure, said the law is “a key and necessary step in recognizing Heritage Areas as a worthy and fiscally responsible partner in the use of public funds for the public good.”Federal funds are generally supplemented by private and foundation monies, and in some instances, state allocations.Rep. John Keenan, chairman of the Committee on Tourism, Arts and Cultural Development, said an important component of the law is that it allows each Heritage Area to receive its state funds directly.