Its first constitution, the "Fundamental Orders," was adopted on January 14, 1639, while its current constitution, the third for Connecticut, was adopted in 1965. Connecticut is the fifth of the original thirteen states. The original constitutions influenced the US Constitution as one of the leading authors was Roger Sherman of New Haven.
The western boundaries of Connecticut have been subject to change over time. According to the Hartford Treaty with the Dutch, signed on September 19, 1650, but never ratified by the British, the western boundary of Connecticut ran north from Greenwich Bay for a distance of 20 Miles "provided the said line come not within 10 miles (16 km) [16 km] of Hudson River. This agreement was observed by both sides until war erupted between England and The Netherlands in 1652. No other limits were found. Conflict over uncertain colonial limits continued until the Duke of York captured New Netherland in 1664. "... On the other hand, Connecticut's original Charter in 1662 granted it all the land to the "South Sea," i.e. the Pacific Ocean. Most colonial royal grants were for long east-west strips. Connecticut took its grant seriously, and established a ninth county between the Susquehanna and Delaware Rivers, named Westmoreland County. This resulted in the brief Pennamite Wars with Pennsylvania.
Connecticut's lands also extended across northern Ohio, called the Western Reserve lands. The Western Reserve section was settled largely by people from Connecticut, and they brought Connecticut place names to Ohio. Agreements with Pennsylvania and New York extinguished the land claims by Connecticut within its neighbors, and the Western Reserve lands were relinquished to the federal government, which brought the state to its present boundaries.