I'll chime in here...TOG, by design, has a faster pace in year two than any other year. Year one is fairly reasonable because they want you to pretty much read the whole Bible in the course of that year plan, ending at the fall of the Roman Empire. Year three covers the 1800s and year four covers the 1900s. That leaves a very large period of history for year two. The first two units of year two focus on European history while the second two units focus on early American history. The authors deliberately devoted an entire year for each of the last two centuries because they believe the events that occurred during those time periods have a direct effect on our world today, much more so than the time period covered in year two. So even though the pace is very fast in year two, it will slow down for years three and four since each only covers about 100 years of history.