3 sentences

1. 在封建王朝时期，土地兼并现象非常严重。

   zài fēng​jiàn wáng​cháo shí​qī, tǔ​dì jiān​bìng xiàn​xiàng fēi​cháng yán​zhòng.

   During the feudal dynasties, land annexation was a very serious phenomenon.

   Source: Dong Chinese Dictionary

2. 曹国是周代的一个诸侯国，后来被宋国兼并。

   Cáo​guó shì Zhōu​dài de yī gè zhū​hóu​guó, hòu​lái bèi Sòng​guó jiān​bìng.

   Cao was a vassal state during the Zhou Dynasty, later annexed by the State of Song.

   Source: Dong Chinese Dictionary

3. 这家跨国公司在去年兼并了三家竞争对手。

   zhè jiā kuà​guó gōng​sī zài qù​nián jiān​bìng le sān jiā jìng​zhēng​duì​shǒu.

   This multinational company acquired three competitors last year.

   Source: Dong Chinese Dictionary