Under new imperialism, europe did not need large numbers of people to control colonies because of

a) decades of proven leadership under old imperialism.

b) improved transportation, communication, and other advantages.

c) carefully forged relationships with colonies’ existing governments.

d) strong central control from within european nations.

B) improved transportation, communication, and other advantages.

Explanation:

New Imperialism refers to the 19th and 20th centuries upsurge of oversees colonies by nations such as USA, Japan and the European Nations.

in this era, the task was relatively easier than the previous eras as the transportation and communication was much advanced. Specially, the advancement in the naval and aviation had proved to be the most useful.

Moreover, the availability of long range communication such as radio and telephone were contributory factors too.

b

Explanation:

improved transportation, communication, and other advantages.

just because

explanation:

idk