Increasing timber harvest for construction is represented by abundant felling parallel to socioeconomic consolidation from the sixth to the ninth centuries.

因建筑需求所而引发的大规模的伐木行为，正好出现在了社会经济趋于平稳的六世纪到九世纪之间。

youdao

The treaty made the forty-ninth parallel the border from the Rocky Mountains to the Pacific Ocean.

VOA: special.2009.02.19

The British foreign minister proposed a treaty that would make the forty-ninth parallel of latitude the border between the United States and British Oregon.

VOA: special.2009.02.19

He offered to divide Oregon at the forty-ninth parallel of latitude.

VOA: special.2009.02.19