What are three differences between American and Canadian economic systems

Constitutional federal republic

federal parliamentary democracy (Parliament of Canada) under a constitutional monarchy; a Commonwealth realm; federal and state authorities and responsibilities regulated in constitution

name: Washington, DC
geographic coordinates: 38 53 N, 77 02 W
time difference: UTC-5 (during Standard Time)
daylight saving time: +1hr, begins second Sunday in March; ends first Sunday in November
note: the 50 United States cover six time zones

etymology: named after George Washington (1732-1799), the first president of the United States

name: Ottawa
geographic coordinates: 45 25 N, 75 42 W
time difference: UTC-5 (same time as Washington, DC, during Standard Time)
daylight saving time: +1hr, begins second Sunday in March; ends first Sunday in November
etymology: the city lies on the south bank of the Ottawa River, from which it derives its name; the river name comes from the Algonquin word "adawe" meaning "to trade" and refers to the indigenous peoples who used the river as a trade highway

note: Canada has six time zones

50 states and 1 district*; Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia*, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming
10 provinces and 3 territories*; Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Northwest Territories*, Nova Scotia, Nunavut*, Ontario, Prince Edward Island, Quebec, Saskatchewan, Yukon*

The answer for this question is c