This presidential order required all the federal agencies to change their units of measurement to the metric system. The order declared that the metric system is the preferred system of measurement for the trade and commerce of the United States.The September 30, 1992 was the deadline to accomplish this.
Taxation without representation, the colonists were taxed by the British without the Colonists own government being consulted. Another reason was the that the British did not allow the Colonists to move into the newly aquired area of the northwest region(Ohio, Kentucky etc.), because the British promised the area to the Native Americans. And may I note the Colonists actually considered themselves to be British.
B the maya developed the religious and solar calendars for political reasons
Answer:
It's because they provide communication and data security
He was an industrialist and philanthropist. He got his fortune in the steel industry by creating the Carnegie Steel Company and he revolutionized the way steel is produced in the U.S.