july 8 , 1935: the nagoya express railway ' s request to prolong the construction period was rejected . 1935年（昭和10年）7月8日 名古屋急行電鉄、工事施行期限延長却下。
if the supposition is true , this otsukayama theory is not reasonable because the construction period and the death year of yuryaku have several decades of difference . そうすると雄略の崩年と築造年代に数十年の開きがあり妥当なものではない。
the construction period of the mid 7th century onwards gains significance in connection with the historical situation around the tumulus at the time of its building . 武蔵府中熊野神社古墳造営当時の古墳近隣の情勢を考察すると、7世紀中葉以降とされる造営時期が大きな意味を持ってくる。
however , it is also possible that they are secondary artifacts belonging to later periods that have nothing to do with the construction period of the kofun itself , since they were unearthed from inside the surrounding moat . ただし周濠内からの出土であることから、古墳本体の築造年代とは関わりのない後世の二次的な出土物である可能性もある。
there are several castles which were built under the influence of the western castle construction style for artillery battles and the bastion-type fortresses (such as goryokaku ), but except for goryokaku , they were not fit for actual fighting because of reduced construction period and budget , and the construction work for most of them was suspended by haihan-chiken (abolition of feudal domains and establishment of prefectures ). また、大砲戦に対応した西洋式築城の影響を受けて、五稜郭など稜堡式要塞の影響を受けて築城された城もいくつか存在するが、五稜郭以外は、工期・予算を大幅に短縮又は圧縮されてとても実戦に耐えうるものではないもの、廃藩置県により工事が中止になったものがほとんどである。
