Which method did the Yamato most rely on to build their empire

A. Establishing ties such as through marriage
B. Forcing other clans off their land.
C. Writing a new constitution for Japan.
D.conquering japans nearest neighbors on the mainland

The Yamato mainly relied on method A, establishing ties such as through marriage, to build their empire. This strategy allowed them to form alliances and gain the support of influential clans, thereby expanding their influence and control over territories in Japan.