51.   The league runs auto races across the country during a season that lasts from spring until late summer.

52.   The number of customs and immigration inspectors along the Canadian border is at pre-NAFTA levels, despite trade tripling between the countries during that time period.

53.   The number of customs and immigrations inspectors along the Canadian border is at pre-NAFTA levels, despite trade tripling between the countries during that time period.

54.   The print will travel to presidential libraries, museums and schools throughout the country during the next three years to encourage interest in history and political activism.

55.   The testing was developed by the U.S. Department of Agriculture Entomological Laboratories in Florida to find repellents to protect soldiers in malaria-ridden countries during World War II.

56.   There have always been celebrations in northern countries during the period now called Christmas week.

57.   We forget how rife anti-Semitism was in the United States and the other Allied countries during World War II.

58.   We won more games than any other team in the country during that period.

59.   What was it, meanwhile, that united the rest of the country during this past year?

60.   With some high-profile exceptions, sales of technology gear and services was especially strong across the country during the second quarter.