Paraphrase this passage from alaska centers.
by the 1920s, dogsleds had long been the primary means
of travel for mail, cargo and people in the vast wilderness
of alaska. recent advances in aircraft technology
however were quickly making air travel a favored
transportation mode in remote alaska and dogsledding
would soon become obsolete.
–“iditarod,"
alaska public lands information centers

By the 1920s, dogsleds had for quite some time been the essential methods

of movement for mail, payload and individuals in the immense wild

of Gold country. Late advances in flying machine innovation

anyway were rapidly making air travel a favored

transportation mode in remote The Frozen North and dogsledding

would before long become out of date.

– "Iditarod,"

The Frozen North Open Terrains Data Focuses